Hi Everyone, This engine just isn't running correctly. I was pretty sure from the last drive that we have a cylinder out. Also the idle is about 200rpm high. I can't really take it for a proper drive until I get this sorted. Here we go! Check out that Noid test kit here: amzn.to/35ph4b5 And the Spark Plug Checker: amzn.to/38wBZeA
Franny, Is there a specific mechanical reason that would have precluded removing the suspected failed injector #5 I think and firing the engine over to see if the injector was actually delivering fuel while still powered by the harness???? placing the injector tip into a clear bottle to see if it delivered fuel when the engine was running?
Again, this has to be the best and most interesting car repair video series. And also the best narrated, only that guy from New Zealand with his Landy series comes close. And the most underrated, looking at the views.
You have a wet plug, so the injector is delivering at least some fuel. The spark looked very weak, so that seems to be the problem. It should be a healthy 'blue flame'. Yours is anemic and yellow/orange. Those early Bosch Motronic systems get unhappy if the resistance in each spark plug circuit is off. The best approach is use factory wires, or dead copies, along with factory spark plugs, which are guaranteed to have the right values for resistance and heat-range. Those fancy plugs don't help anything, anyway. The wires are different lengths, so the resistance is a bit different. Each wire has its own specific resistor built-in to compensate. With those items taken care of, the obvious thing to look at is the ignition coil. It could also be a ground problem, or a short somewhere. In any case, spark is almost certainly the issue.
While we’re in pandemic mode and looking to fend off boredom, your videos are a breath of fresh air. I look forward to them like I used to look forward to movie premieres. More please!
Thank you. I enjoy how you show the issues that arise after a rebuild, and how you resolve them. Even after the time, effort and money you two have spent. Just amazing. It's doesn't make me feel so bad if I missed something during a car repair. Hopefully RUclips helps with cost. Keep it up. I see a lot of Mk1 Golf fittings and minor parts on your car. Never realized how much parts sharing went on.
Hi Franny, Always a pleasure to watch You,,, the methodical process use is the proper way .... My friend who is a early 911 guru, I have had similar experiences but many years ago (1973.5 removed the FI and put tripple Webbers on ,it ran fairly well but smoked profusely , so top end job and back together,, wish us luck,,, engine back in car a in a few days ... I follow Your trials n tribs ,,, and realize a feeling of confidence.... Great Video quality (quite a job in itself) THANK YOU :)
This is my first time viewing one of your videos. I have to say that you are probably the best content producers for instructional automotive troubleshooting I've seen. I'm a car guy from waaay back. I was taught automotive electrical and A/C when I was 18 yrs old, back in 1983 in a shop that had been in business in Downtown Los Angeles, since 1933 maybe earlier. I plan on buying an older 911 basket case and fixing her up, hopefully within the next couple years when I have the garage space. I'll be watching more and subscribing Thanks
Franny, as always this video was excellent. I especially liked your general talk about the diagnostic process starting at 11:42. Your common sense approach to eliminating unlikely paths is excellent and I think you explained it well. There is no doubt it will help us amateur mechanics avoid jumping to conclusions and fruitlessly rushing to time-consuming or expensive actions.
Its so easy to just start throwing parts at an issue rather than do the work to determine what the problem is. Your process was methodical and wise. Its a simple process of elimination. Great video! Cheers!
Look for vacuum leaks passed the mass air flow sensor for idle issues (check intake gasket, vacuum lines, check mass air flow sensor itself) That plug looks like the injector is not spraying in a mist formation. Maybe clogged or faulty or getting a poor signal. Check fuel system wiring. Sometimes the head of the ejector can get damaged in the prosses of the rebuild. If you drop, or set down the injector rail on a dirty table its possible the injector can get debris in it. Possible the tip of injector could have damage. Good call, swap out injector to "see if the problem follows the injector " Edit: I have actually had a faulty injector that was "bench tested/flow tested" too. Lesson learned, once you get them back AGAIN , test them with a 9v GOOD LUCK
Great methodology to solving the problem! Always so self satisfying when you hit that ‘ah ha’ moment! It keeps us wrenching! Looking forward to hearing the engine purr on all six. 🍻
Hi Franny and Heidi, great Diagnostics.!! I absolutely love your videos. If it’s Heidi that’s doing the editing kudos! You both do such great work. When I am flying behind my wife’s 1975 mechanically injected, horizontally opposed six cylinder, air cooled two plugs per cylinder Continental IO-550, we won’t take off without all six cylinders firing evenly on each set of plugs. I am so lucky to have an EGT/CHT that shows me instantly if an injector is clogged or a plug is fouled.. Keep up all the good work. Looking forward to your next video.💕
hallo Franny from england, great videos i learned something from you, i never knew about the 'hot head' caution removing spark plug. love the way you explain things fun but factual. nice to see girls working on cars . have a good 2021 both of you. KR
Wow, great video. I really enjoy your methodology working the problem. I owned an '87 for 8 years. As a retired mechanic, at least half the joy of ownership was doing my own mechanical work. It's a pleasure to revisit an old love, sadly missed. Thanks!
I’ve been watching BAT auctions since a while dreaming of owning a pre-993 air cooled 911 one day. Now that I found your channel I realize how demanding it might be to restore and maintain these cars. Thank you for showing us your passionate work on these beautiful machines!
Thanks! Maintenance isn't that bad is you start with a sorted car. IMHO the valve clearance adjustment is the worst of it... The rest is just oil changes and such. But getting a sorted car may take a bit of work and $$ up front.
Nice! I just saw this, thanks for this content. A couple of notes: 1) If you're trying to isolate injector vs. harness, you can just leave the injector in place and switch the harness connector between #4 and #5 (for example) if you have enough slack in the wiring -- might have to snip the zip ties. Carrera DME are batch-fired injectors, not sequence-fired, so this tip doesn't work w/all cars. 2) While your spark plug looks like it's firing fine, it also looks like a Bosch Platinum +4 plug. In my experience the SC and Carrera ignition systems tend to fire more reliably with copper electrode plugs such as the NGK BPR series or the Bosch DC. YMMV, but worth a thought. 3) So appreciate your taking the time to mention having a fire extinguisher handy -- kudos to you. I have to admit though it gives me the shivers a little bit when I see your ponytail close to the AC compressor & belt. It's probably just the camera angle/depth of field and you're not close at all, but a couple of times when you look at the camera your hair looks like it's just inches from getting snagged in the compressor pulley. Thanks again for the thoughtful diagnostic approach and easy-to-understand descriptions. Subscribed!
Great video and series Franny - just bought my own 991.2 - and I’m Aviation engine geek - very interesting and informative - you are a natural teacher or college professor- very easy to follow - this is exactly the process of elimination we go through with aircraft piston engines.
Great diagnostic work! Such a great feeling when you come up with the answer. Love your channel. Thank you for doing what you do! Have a great weekend!
Wow, this is about the most articulate and methodical diagnostic video I've seen in quite some time- I'd say even better than wheeler dealer! Excellent work ladies, and shout out to some fellow Coloradans!
So fun to watch you document how to localize an issue (what I do in my line of work). It's systematic, instructional and fruitful. Thanks so much for showing us. (It's been snowing in SoCO, so I can see the colder weather is up your way also...)
Hi Franny and Heidi, I stumbled across your channel a little while ago and I got hooked to it immediately. I binged through the many videos on your YT channel as if it were Netflix and I can only tip my imaginary hat to you. Really, really informative and helpful, very well made, excellently narrated and such a difference if compared to similar channels on YT. I used to swing a wrench myself a lot in my younger days working on my 914/6 which I owned back in the day. Then I started a family and cars became more of a daily driver issue than an obesssion. By the way, Colorado seems to be really beautiful, therefore I'm looking forward to more country rides on your channel. Keep up the great work, all the best from Munich, Germany.
Excellent diagnostic. I had the same injector issue on my ‘89 3.2 and it was exactly this, a faulty injector. With mine the fault was engine hesitation, when getting back onto the throttle after overrun. These are lovely and underrated models and despite their compact size, a car for all occasions.
Hi ladies what a fabulous job you have both done ,i am in awe of the detail you put into it .i started with the first one and ive been hocked on watching all ref this resto , they have kept me sane during the UK lockdown please keep the updates coming . Just one question on i think number 22 video i could see what looks like a cafe racer sitting outside your lovely workshop ,is this your 's perhaps you could do a video on this if so , or maybe do a motorcycle resto lol , many thanks
Hi Paul, that is Marcel's (our helper for the day and the owner of the Countach that has been on the channel a few times). It is a very custom build from Germany. Very interesting. We should have him over to explain it :)
At 8:02 if the heads have expanded due to heat, your head to spark plug Tolerance in the threads will be higher in theory. From my experience pulling igniters out of CF-34 engines, it always seemed to be way easier to do when the engine is hot.
I've been watching this channel for a fair few months now. It's excellent! and VERY under-rated. You deserve a much larger audience and I'm sure you'll get it.
Great job, You inspired me the same job on my 1992 965 Turbo. I know my around air-cooled engines very well. Having owned and auto crossed and did a few DE's in 911's cars for 30 years now, I live in the DC area now, but from California, its become my winter project living in DC, I'm waiting on my exhaust to be finished getting ceramic coated and some powder coated parts, I also sent my hardware off to Van Nuys plating, Linda is great, Thank you for the recommendation. I also took the front suspension apart to have all the arms blasted a powder-coated and new joints and stuff and hardware plated as well. And injector blocks and upgraded clutch. I doing a leakdown today, all this in my garage just like you ladies. Again thank you for the inspiration. Helio
@@HeidiandFranny I would like to send you pic's of my project. My handle on Rennlist and Pelican forums is heliolps2, please send me a private message with your email and I'll send you updates on my 965. Keep up the great work Ladies :) Helio
Awesome video best I've ever seen on the 3.2 Carrera. One minor point going through the process is the distributor in that series 911 running Bosch DME does not affect the timing of the sparkplugs firing. That function is from the flywheel position sensor so the distributor merely provides the mechanical link to conduct the spark from the ignition coil to each spark plug.
Just a random note on my 1984 Targa 3.2 rebuild. After a complete rebuild we reinstalled the 3.2 . Would barely run /miss and backfire ~ also made the Catalytic converter glow red hot . We tried everything. plugs. wires. etc etc. Problem was we replaced the old flywheel with a new one & the kit must have not been machined correctly Or world Pac gave us the wrong Sachs flywheel throwing the 2 DME timing sensors off . My mechanic asked me " hey ! do you have the original flywheel ? Im so glad I kept it ! We dropped the engine reinstalled with the Original flywheel . It fired up first crank and purred like a kitten !
Like your channel a lot. I just bought a Porsche 1991 964 cabriolet With 40000 miles on it. With 40000 miles on it. I have restored jaguar XKE but for some reason have been afraid to do any work on this car. Fortunately at this point it doesn't need anything but your videos help me to think about doing more work on my own.
I had exactly this issue with an injector after a full rebuild and the injectors cleaned and tested (like yours). It appears that the "stuff" they use for cleaning washes all the gum and varnish out of the injector and through that little hole at the bottom. Sometimes, as you have found, the "stuff" laden with all the gunk dries around the needle and it sticks. I gave my injector body a sharp tap on a hard surface (vice) and that frees them up. Saves sending them back and waiting. Great video can't wait for the next episode.
Battery borrowed from a smoke detector / CO detector :P. I've had cars that sat for a very long time get stuck injectors, and a few sharp taps with the handle of a screwdriver frees them back up, and the problem doesn't happen again as long as the injectors don't get dried out. The bad injector doesn't have an open circuit because I saw an inductive back EMF spark when you disconnected the 9V battery. Thanks for another great video! I was very relieved when I saw the problem follow the injector.
First thing we do is to replace the smoke detector batteries when we install the new detectors. I think I put eight or ten new ones up. Lots of those red batteries left over ;)
You guys really look like you know your stuff; pulling and rebuilding Porsche motors. The trouble shooting principals are great foundation for those that feel overwhelmed and clueless with any motor.
Good detective work. I do think there was an easier way. I would have used a small rubber tube line. With one end in your ear the other holding next to each injector to listen for operational activity. Then just seeing if you have power. If you have power, and no sound, replace the injector. This also works on parking sensors on bumpers. Worked for years on Porsche/Audi in the 70's and learned a lot. Early systems were mechanical injection at over 200psi. Different times for sure.... Keep it up. Glenn
Great video - and nice to not only see the diagnostic process done, but also really well technically and practically commentated on. Big fan of the whale tail, so frustrating for you and us not to see her back on the road yet, but the wait will be worth it - Good Luck!
I miss my '88 3.2 Carrera Targa so badly. It was so much fun to drive. Cornered like a slot car, and 2nd to 3rd gear was incredible. Health issues forced me to sell.
Hey Heidi, it is wonderful to see a woman in the garage. You obviously know your craft, but more importantly you are awesome in explaining it to guys like me who have only a slight clue. I loved this video. I loved that it was you that filmed it, it's usually full testosterone in the garage. You go girl!
Fantastic diagnostic video!!! Don't get discouraged, did a split case rebuild on my '87 Carrera last year always a couple teething and digestion anomalies that can't be anticipated. I believe mine were a cracked forward fuel line, pedal bushings and slave cylinder on hydraulic clutch - be oh so grateful you don't have one of those! ;) Just a suggestion....let that baby breathe, now that you have a sport exhaust ditch the restrictive & bulky air box and throw on a K&N cone filter. I think you'll be happy with the result.
The cameras you have are great! I own a CayanneS that came from Colarado and was serviced at Prestige Imports Lakewood I have only had one problem with the Porsche the leak detection failed and the rear hatch will not stay up when it is cold. The thing i love about it is if u put it in 4 weel drive it will go no matter what snow ,mud My Lincoln SUV all wheel drive will not.
A stethoscope is very good to check injectors with. And faster. Just put the probe on each injector while running, and you can hear the clicking of each injector.
@15:18 - "Way to interrogate that........" This engine is about to take a trip to a CIA interrogation cell........ Franny, great job with your diagnosis, patience, and admission of possible fault waiting a year to put those injectors back in the car. I'm so impressed with your video series. Can't wait to see if the car is ready for a drive through the CO mountains once you get those injectors back!
That engine bay is so clean, I can't stand it! Well done. One thing I've learned rebuilding Porsche and Volkswagen engines that are air cooled is, you have to either rebuild the wiring harness yourself or buy one from someone who makes them. I'm not saying this is your problem, but in the end it will be the weakest link once you get the car back out on the road. Has been for me several times until I realized this.
I had an 85 Carrera for 20 years up until 2 years ago when someone offered me silly money for it (I had intended to keep it for the rest of my life) It was the European model, so no cat, more power and a gearbox oil cooler. When I first got it there was also an idle issue, but not the same as yours, but maybe related. Mine would want to stall if you suddenly lifted off @ low rpm. It found that there is an idle airflow adjustment screw (just behind the idle valve if I remember correctly). By turning it out a little I got rid of the problem, but if you turned up its out too far it raised the idle above nominal. My impression is that the idle valve is just fine tuning, cold running and to compensate for the air con.
Yup, you are totally correct. I bet the different fuel here vs Europe was the reason it needed an adjustment. Our car was running fine before so I don't think that is the issue. The manual says it needs to be adjusted with an exhaust gas analyzer. I want to get the injectors all working properly and then verify each component to be sure everything is up to spec.
One thought I had was to listen each injector with one of those stethoscope things used for finding noisy bearings. Injectors are quite loud when running at the full 12 V. This would save the work of swapping them around. I never tried this since all my experience with missing cylinders has been with carbs, but I did mess with an injection system for a racing buddy who'd added a turbo to an L Jetronic equipped engine. The injectors on a bench were quite loud without the engine there to drown them out. I've used long screwdrivers in my ear when I didn't have the stethoscope. Works almost as well if the engine isn't too loud.
Even if I knew as much as she does (I don’t) my hands and arms would never fit in those places. She has it all! BTW, nice to see a clean engine compartment.
Wow, great diagnostic algorithm. I have the same car. A common issue with the 3.2 is busted head bolts , which could drop compression but you may see an oil leak. I didn’t know that you could bench test an injector with a small battery. Great video.
Great diagnosis. I think you are right about the injector having locked up because it sat unused for a year. With such small components inside the unit it doesn't take much corrosion - or even dried oil or something - to cause a mechanical issue. I wonder if the resistance across the connector pins was spec or not. No worries, sounds like RC has your back. Great find!
Thanks! Yup, RC had to work on them a bit and that wasn't the only one... I did check the resistance and it was in spec at close to 3 Ohms. I'm really curious how it will go when they are back in.
Franny, regarding the analysis, next time the first step (also easiest) is after the engine has run, take an infra-red temperature gauge/pistol (these now cost less than 20 USD) and check the exhaust manifold temperature per cylinder … You have a car lift so that's easy. (then the spark and then the injector (which indeed you did). Also I think I saw a small spark 23:36, so I suppose the jet needle was stuck - so it should be repairable, we will see). Success!
Awesome problem-solving. It's like you're an engineer or something :) And how nice to be able to identify the problem without having to tear it down much at all. And of course you went from easiest to hardest in identifying the problem, which is obviously the smart way to proceed.
Excellent video. On my ‘94 Carrera the EMS tool allows to diag the injector by pulsing each one 👍. Can initiate test, run around and listen for click click in engine bay. 👍. I probably didn’t need it, but, while engine out, I sent injectors to RC 👍. They are local to me, Looks like you’re getting close 🥳
I dont even have a Porsche but loved watching this, great video. Reminds me of working on 1275 minis...always an issue. Haha. Great content, keep up the great work 👍 👏
WoW! FI is not something I'm familiar with, but you really systematically isolated the faulty component. WoW, great job Franny. IF I had a suggestion, it would be that you secure your lovely ponytail. I was a little frighten to see it moving around so much with the engine on, and the belt right there. I only remember from my H.S. days, (69-73 ~ ancient I know) of a friend that had long hair, and working in the machine shop during class on a lathe, it got caught and pulled his head down right to the machine, and only by yanking his head and pulling the hair right out of his scalp saved him from serious injury. He had past shoulder length hair.... . Anyway, great job, watch out for those purdy locks :-) . So glad you figured it out so methodically. Great video. :-)
Hi Heidi and Franny, I watched all of your Carrera 3,2 project movies within the last few hours and I have to say I love it so much. I never saw such nice and experienced people doing this kind of tutorial and explaining movies at such a detailed, charming and entertaining way. To say it in short, you ladies are superb. I am looking forward how you will fix the erratic rough run / stall of your engine. If it’s not the coil (where I could bet it is), it might be a good idea, to double check all the ground points you disconnected for engine removement. I am although interested in, if you replaced the O2 sensor, checked the resistance of cylinder 3 temp sensor even if it’s brand new (and just impacts cold start). And how did you checked for any air leaks (smoke in the inlet manifold)? As said before, I am looking forward to see more of you… Good luck, take care and thank you so much. Cheers Alexander (Germany Stuttgart)
Thanks so much Alexander! I do need to go back and look at all three of those sensors. I have the old ones and they are working (I just replaced them because the wiring is falling apart). I did not replace the O2 sensor. I think I'll do that as well for good measure. I think they are fairly delicate. The ground points have all been cleaned. That is a good call. Thanks!
A good old fashioned mechanic's stethoscope can identify a bad injector also. If it ain't clicking it ain't working. Not sure if you could get it on those injectors though. It's pretty tight in there. I got the spark plug socket stuck on my '79 911sc once on number three. Took me an hour to get it out.
At least on these air cooled cars there are super hard to get back in... They just want to cross thread every time... Cold they go right in. They are right coming out too.
I love the way you troubleshoot! Naughty you, keeping them on the shelf that long after cleaning ;) I had mine ready to go in after getting them back, but waiting for 3 or 4 weeks. My Alfa with L-Jet ran like hell and sounded like a VW. I ended up driving it for an hour with Techron in the tank and it cleared up. It's funny- they tell us to install them right away, but we usually don't. Humans, sheesh. BTW, cool to see you wear ratarossa's garb!
I just have to add- those Bosch connectors on the harness side can push back into their housings while removing the harness. This happened to me on the throttle position switch and on one of the coolant temp sensors. Pulled my hair out trying to figure out why it was running so poorly 'all of a sudden'; it just wiggled back into the housing while driving. That one took a few weeks and new parts to figure out...
Thanks!! That's really helpful.. New video tomorrow morning and I did find something, but I'll totally check out the connectors. Wow... That must have been a real thing to figure out!! Awesome work!
@@HeidiandFranny Thanks for saying so. It was a true 'ah-ha' moment when I randomly noticed a pin connector just a bit out of place and not even with the others. I checked all the Bosch connectors I could find and found two. Good news is, you can push it all the way out with patience, bend the little metal tang up, and 'snick' it back into place in the housing.
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Hi Everyone, This engine just isn't running correctly. I was pretty sure from the last drive that we have a cylinder out. Also the idle is about 200rpm high. I can't really take it for a proper drive until I get this sorted. Here we go!
Check out that Noid test kit here: amzn.to/35ph4b5
And the Spark Plug Checker: amzn.to/38wBZeA
Franny, Is there a specific mechanical reason that would have precluded removing the suspected failed injector #5 I think and firing the engine over to see if the injector was actually delivering fuel while still powered by the harness???? placing the injector tip into a clear bottle to see if it delivered fuel when the engine was running?
I love your content!!
Bad injectors happen. Sometimes electronics go bad. I have a 1980 911 with a Paxton supercharger. It's fun.
Appreciate your videos.
Hi Franny and company....is yours a 1985 ? Or a 1987 ? I've got a 85' Carrera and a 1987 G50 Cab !👍🏁🏆💝
@@frankvella1392 it is an '86 actually...
Again, this has to be the best and most interesting car repair video series. And also the best narrated, only that guy from New Zealand with his Landy series comes close.
And the most underrated, looking at the views.
Oh, Thanks so much! So nice to hear :)
Great detective work! Top quality as always.
Great detective work! Your diagnostic process is so clear and concise. Amazing video.
Yea! Thanks!
thank you for teaching me about my own car!
Hi Ted! Heidi
Hi Ted! Hey, loved the Taycan 4S review/drive! Maybe a 996TT replacement?? Hmmm... Congrats in 100K!!!
Good old fashioned mechanical detective work, no laptop required here 😁
You have a wet plug, so the injector is delivering at least some fuel. The spark looked very weak, so that seems to be the problem. It should be a healthy 'blue flame'. Yours is anemic and yellow/orange.
Those early Bosch Motronic systems get unhappy if the resistance in each spark plug circuit is off. The best approach is use factory wires, or dead copies, along with factory spark plugs, which are guaranteed to have the right values for resistance and heat-range. Those fancy plugs don't help anything, anyway. The wires are different lengths, so the resistance is a bit different. Each wire has its own specific resistor built-in to compensate. With those items taken care of, the obvious thing to look at is the ignition coil. It could also be a ground problem, or a short somewhere. In any case, spark is almost certainly the issue.
While we’re in pandemic mode and looking to fend off boredom, your videos are a breath of fresh air. I look forward to them like I used to look forward to movie premieres. More please!
Thanks Allen! You bet. We still have more to do.
Thank you.
I enjoy how you show the issues that arise after a rebuild, and how you resolve them. Even after the time, effort and money you two have spent. Just amazing.
It's doesn't make me feel so bad if I missed something during a car repair. Hopefully RUclips helps with cost. Keep it up.
I see a lot of Mk1 Golf fittings and minor parts on your car. Never realized how much parts sharing went on.
Thanks!
Lots of respect for this lady. Not an easy car to work on plus troubleshooting since non odb2 car. Kudos
Hi Franny, Always a pleasure to watch You,,, the methodical process use is the proper way .... My friend who is a early 911 guru, I have had similar experiences but many years ago (1973.5 removed the FI and put tripple Webbers on ,it ran fairly well but smoked profusely , so top end job and back together,, wish us luck,,, engine back in car a in a few days ... I follow Your trials n tribs ,,, and realize a feeling of confidence.... Great Video quality (quite a job in itself) THANK YOU :)
This is my first time viewing one of your videos.
I have to say that you are probably the best content producers for instructional automotive troubleshooting I've seen.
I'm a car guy from waaay back. I was taught automotive electrical and A/C when I was 18 yrs old, back in 1983 in a shop that had been in business in Downtown Los Angeles, since 1933 maybe earlier.
I plan on buying an older 911 basket case and fixing her up, hopefully within the next couple years when I have the garage space.
I'll be watching more and subscribing
Thanks
Franny, as always this video was excellent. I especially liked your general talk about the diagnostic process starting at 11:42. Your common sense approach to eliminating unlikely paths is excellent and I think you explained it well. There is no doubt it will help us amateur mechanics avoid jumping to conclusions and fruitlessly rushing to time-consuming or expensive actions.
Oh great! I worry a bit about adding extra content... Glad you enjoyed it :)
You are very thorough & know your stuff.great job.
Its so easy to just start throwing parts at an issue rather than do the work to determine what the problem is. Your process was methodical and wise. Its a simple process of elimination. Great video! Cheers!
Thanks so much :)
Wow, you are quite the talented mechanic! Love following the diagnostic process and can’t wait to see the 3.2 running smoothly again 😁
You are the cleanest mechanic on earth.
Look for vacuum leaks passed the mass air flow sensor for idle issues (check intake gasket, vacuum lines, check mass air flow sensor itself)
That plug looks like the injector is not spraying in a mist formation. Maybe clogged or faulty or getting a poor signal. Check fuel system wiring.
Sometimes the head of the ejector can get damaged in the prosses of the rebuild. If you drop, or set down the injector rail on a dirty table its possible the injector can get debris in it. Possible the tip of injector could have damage.
Good call, swap out injector to "see if the problem follows the injector "
Edit: I have actually had a faulty injector that was "bench tested/flow tested" too.
Lesson learned, once you get them back AGAIN , test them with a 9v
GOOD LUCK
Great methodology to solving the problem! Always so self satisfying when you hit that ‘ah ha’ moment! It keeps us wrenching! Looking forward to hearing the engine purr on all six. 🍻
Thanks! Let's hope this is it. We'll see :)
@@HeidiandFranny whether it is or not I know you will find the answer and the engine will be running great in the end!
I can't believe I found this channel very inspiring to see this lady so knowledgeable about cars keep up the good work n thanks for teaching us👍
Thanks so much!
Hi Franny and Heidi, great Diagnostics.!! I absolutely love your videos. If it’s Heidi that’s doing the editing kudos! You both do such great work.
When I am flying behind my wife’s 1975 mechanically injected, horizontally opposed six cylinder, air cooled two plugs per cylinder Continental IO-550, we won’t take off without all six cylinders firing evenly on each set of plugs. I am so lucky to have an EGT/CHT that shows me instantly if an injector is clogged or a plug is fouled..
Keep up all the good work. Looking forward to your next video.💕
An IO-550 is a seriously big flat-6 aero engine. What large air frame is it attached to? Cheers from another flat-4/6 aviator in NZL, David :)
Franny, you have the patience of a saint as well as being full of knowledge. You are an inspiration =)
Another quality content filled "how to" vid!
hallo Franny from england, great videos i learned something from you, i never knew about the 'hot head' caution removing spark plug. love the way you explain things fun but factual. nice to see girls working on
cars . have a good 2021 both of you. KR
As an inspiring Porsche fanatic, this is awesome! Thank-you! Keep them coming!
Wow, great video. I really enjoy your methodology working the problem. I owned an '87 for 8 years. As a retired mechanic, at least half the joy of ownership was doing my own mechanical work. It's a pleasure to revisit an old love, sadly missed. Thanks!
Thanks!
I’ve been watching BAT auctions since a while dreaming of owning a pre-993 air cooled 911 one day. Now that I found your channel I realize how demanding it might be to restore and maintain these cars. Thank you for showing us your passionate work on these beautiful machines!
Thanks! Maintenance isn't that bad is you start with a sorted car. IMHO the valve clearance adjustment is the worst of it... The rest is just oil changes and such. But getting a sorted car may take a bit of work and $$ up front.
993 is very different.it is newer for one. Heidi
Nice! I just saw this, thanks for this content. A couple of notes:
1) If you're trying to isolate injector vs. harness, you can just leave the injector in place and switch the harness connector between #4 and #5 (for example) if you have enough slack in the wiring -- might have to snip the zip ties. Carrera DME are batch-fired injectors, not sequence-fired, so this tip doesn't work w/all cars.
2) While your spark plug looks like it's firing fine, it also looks like a Bosch Platinum +4 plug. In my experience the SC and Carrera ignition systems tend to fire more reliably with copper electrode plugs such as the NGK BPR series or the Bosch DC. YMMV, but worth a thought.
3) So appreciate your taking the time to mention having a fire extinguisher handy -- kudos to you. I have to admit though it gives me the shivers a little bit when I see your ponytail close to the AC compressor & belt. It's probably just the camera angle/depth of field and you're not close at all, but a couple of times when you look at the camera your hair looks like it's just inches from getting snagged in the compressor pulley.
Thanks again for the thoughtful diagnostic approach and easy-to-understand descriptions. Subscribed!
Great video and series Franny - just bought my own 991.2 - and I’m Aviation engine geek - very interesting and informative - you are a natural teacher or college professor- very easy to follow - this is exactly the process of elimination we go through with aircraft piston engines.
Thanks! Congrats on your new 991.2! I bet you are over the moon!
Great diagnostic work! Such a great feeling when you come up with the answer. Love your channel. Thank you for doing what you do! Have a great weekend!
Thanks so much! You too :)
Wow, this is about the most articulate and methodical diagnostic video I've seen in quite some time- I'd say even better than wheeler dealer! Excellent work ladies, and shout out to some fellow Coloradans!
Thanks so much! We just need a little warmer weather :)
So fun to watch you document how to localize an issue (what I do in my line of work). It's systematic, instructional and fruitful. Thanks so much for showing us. (It's been snowing in SoCO, so I can see the colder weather is up your way also...)
Sure is... Snowing now and getting colder...
You have so much patience. I would have been swearing and throwing tools! One of the reasons I'm not a mechanic.
There might be some interesting footage on the cutting room floor, lol.
Explaining technical things in simple language is a real skill, this extremely clever lady is very very good at it..... thankyou.👍🇬🇧
Thanks so much!
Hi Franny and Heidi, I stumbled across your channel a little while ago and I got hooked to it immediately. I binged through the many videos on your YT channel as if it were Netflix and I can only tip my imaginary hat to you. Really, really informative and helpful, very well made, excellently narrated and such a difference if compared to similar channels on YT. I used to swing a wrench myself a lot in my younger days working on my 914/6 which I owned back in the day. Then I started a family and cars became more of a daily driver issue than an obesssion. By the way, Colorado seems to be really beautiful, therefore I'm looking forward to more country rides on your channel. Keep up the great work, all the best from Munich, Germany.
Thanks you so much for your thoughtful comment! I hope you will get back to a bit of wrenching in the future :)
Excellent diagnostic. I had the same injector issue on my ‘89 3.2 and it was exactly this, a faulty injector. With mine the fault was engine hesitation, when getting back onto the throttle after overrun. These are lovely and underrated models and despite their compact size, a car for all occasions.
Very much agree :) Just a hoot to drive and very usable.
First time watching one of your videos very impressed good job explaining everything
Thanks so much! Welcome :)
Hi ladies what a fabulous job you have both done ,i am in awe of the detail you put into it .i started with the first one and ive been hocked on watching all ref this resto , they have kept me sane during the UK lockdown please keep the updates coming .
Just one question on i think number 22 video i could see what looks like a cafe racer sitting outside your lovely workshop ,is this your 's perhaps you could do a video on this if so , or maybe do a motorcycle resto lol , many thanks
Hi Paul, that is Marcel's (our helper for the day and the owner of the Countach that has been on the channel a few times). It is a very custom build from Germany. Very interesting. We should have him over to explain it :)
Absolutely fantastic, my guess was right although I had the mid cylinder left bank & not the right 😊 .
Look forward to hearing it run smooth
Wonderful work doing your research on eliminating the problem its a great cannel congratulations to you both keep safe and well
Thanks so much!
At 8:02 if the heads have expanded due to heat, your head to spark plug Tolerance in the threads will be higher in theory. From my experience pulling igniters out of CF-34 engines, it always seemed to be way easier to do when the engine is hot.
Excellent overview of a fairly common issue on older models.
I've been watching this channel for a fair few months now. It's excellent! and VERY under-rated. You deserve a much larger audience and I'm sure you'll get it.
Wow, thank you!
First ever excellent explanation of engine parts functioning and testing! Like it!
This is real troubleshooting and very interesting to watch. Thanks Franny.!!!
Thanks so much!
Great info. Old school wrenching.. diagnostic no lap top required 🔧 respect. First video I watched looking forward going through the rest.
I had a Porsche 912e years back. Talk about gremlins, this brought back some memories.
At post collector improvements?
You are an amazing teacher, I learned a ton regarding trouble shooting and love your careful patient approach 🙏🏽 thank you!!
Thanks so much!
What a great video for diagnosis of engine problems that translates across different platforms. Thank you!
Thanks so much!
Just great how you methodically stepped through the problem.
Hi Heidi and Franny thank you for showing us the diagnosis process. Hopefully all problems solved soon. 😊
Thanks so much!
Great job, You inspired me the same job on my 1992 965 Turbo. I know my around air-cooled engines very well. Having owned and auto crossed and did a few DE's in 911's cars for 30 years now, I live in the DC area now, but from California, its become my winter project living in DC, I'm waiting on my exhaust to be finished getting ceramic coated and some powder coated parts, I also sent my hardware off to Van Nuys plating, Linda is great, Thank you for the recommendation. I also took the front suspension apart to have all the arms blasted a powder-coated and new joints and stuff and hardware plated as well. And injector blocks and upgraded clutch. I doing a leakdown today, all this in my garage just like you ladies. Again thank you for the inspiration.
Helio
Oh, that's great! You are going to love the plating. They do a great job. Wow! You'll have to let us know how it goes!
@@HeidiandFranny I would like to send you pic's of my project. My handle on Rennlist and Pelican forums is heliolps2, please send me a private message with your email and I'll send you updates on my 965. Keep up the great work Ladies :)
Helio
Awesome video best I've ever seen on the 3.2 Carrera. One minor point going through the process is the distributor in that series 911 running Bosch DME does not affect the timing of the sparkplugs firing. That function is from the flywheel position sensor so the distributor merely provides the mechanical link to conduct the spark from the ignition coil to each spark plug.
Just a random note on my 1984 Targa 3.2 rebuild. After a complete rebuild we reinstalled the 3.2 . Would barely run /miss and backfire ~ also made the Catalytic converter glow red hot . We tried everything. plugs. wires. etc etc. Problem was we replaced the old flywheel with a new one & the kit must have not been machined correctly Or world Pac gave us the wrong Sachs flywheel throwing the 2 DME timing sensors off . My mechanic asked me " hey ! do you have the original flywheel ? Im so glad I kept it ! We dropped the engine reinstalled with the Original flywheel . It fired up first crank and purred like a kitten !
Like your channel a lot. I just bought a Porsche 1991 964 cabriolet With 40000 miles on it. With 40000 miles on it. I have restored jaguar XKE but for some reason have been afraid to do any work on this car. Fortunately at this point it doesn't need anything but your videos help me to think about doing more work on my own.
Hi Charlie, They can be a bit intimidating but once you get into it they aren't that bad - just different. Enjoy your 964!
I had exactly this issue with an injector after a full rebuild and the injectors cleaned and tested (like yours). It appears that the "stuff" they use for cleaning washes all the gum and varnish out of the injector and through that little hole at the bottom. Sometimes, as you have found, the "stuff" laden with all the gunk dries around the needle and it sticks. I gave my injector body a sharp tap on a hard surface (vice) and that frees them up. Saves sending them back and waiting. Great video can't wait for the next episode.
Thanks!
Battery borrowed from a smoke detector / CO detector :P. I've had cars that sat for a very long time get stuck injectors, and a few sharp taps with the handle of a screwdriver frees them back up, and the problem doesn't happen again as long as the injectors don't get dried out. The bad injector doesn't have an open circuit because I saw an inductive back EMF spark when you disconnected the 9V battery. Thanks for another great video! I was very relieved when I saw the problem follow the injector.
First thing we do is to replace the smoke detector batteries when we install the new detectors. I think I put eight or ten new ones up. Lots of those red batteries left over ;)
Fantastic video. This has to be one the best diagnostic videos I have seen.
Wow, thanks! That's awesome!
Thank you Heidi and Franny! I needed a break from crazy people doing crazy things news!
You bet! :)
You guys really look like you know your stuff; pulling and rebuilding Porsche motors. The trouble shooting principals are great foundation for those that feel overwhelmed and clueless with any motor.
Thanks!
Excellent diagnosis. You took your time and eliminated each item one at a time until you located the problem. Great videos, keep up the good work!!
Thanks so much!
Franny’s a great engineer.
Good detective work. I do think there was an easier way. I would have used a small rubber tube line. With one end in your ear the other holding next to each injector to listen for operational activity. Then just seeing if you have power. If you have power, and no sound, replace the injector. This also works on parking sensors on bumpers. Worked for years on Porsche/Audi in the 70's and learned a lot. Early systems were mechanical injection at over 200psi. Different times for sure....
Keep it up.
Glenn
Great video - and nice to not only see the diagnostic process done, but also really well technically and practically commentated on. Big fan of the whale tail, so frustrating for you and us not to see her back on the road yet, but the wait will be worth it - Good Luck!
Thanks so much! Soon :)
I miss my '88 3.2 Carrera Targa so badly. It was so much fun to drive. Cornered like a slot car, and 2nd to 3rd gear was incredible. Health issues forced me to sell.
Excellent work. Nice to watch. It shows that everything could be fixed.
Thanks 👍
Hey Heidi, it is wonderful to see a woman in the garage. You obviously know your craft, but more importantly you are awesome in explaining it to guys like me who have only a slight clue. I loved this video. I loved that it was you that filmed it, it's usually full testosterone in the garage. You go girl!
Fantastic diagnostic video!!!
Don't get discouraged, did a split case rebuild on my '87 Carrera last year always a couple teething and digestion anomalies that can't be anticipated. I believe mine were a cracked forward fuel line, pedal bushings and slave cylinder on hydraulic clutch - be oh so grateful you don't have one of those! ;)
Just a suggestion....let that baby breathe, now that you have a sport exhaust ditch the restrictive & bulky air box and throw on a K&N cone filter. I think you'll be happy with the result.
Thanks so much!
The cameras you have are great! I own a CayanneS that came from Colarado and was
serviced at Prestige Imports Lakewood I have only had one problem with the Porsche
the leak detection failed and the rear hatch will not stay up when it is cold.
The thing i love about it is if u put it in 4 weel drive it will go no matter what snow ,mud
My Lincoln SUV all wheel drive will not.
They are surprisingly good on snow. Even our 996 is great in the snow!
Troubleshooting and diagnostics at its finest. Great tip on the 9 Volt battery as well. Excellent work, Franny :)
Thanks so much Freerk!
Excellent detective work throwing a dragnet over each sub system
Thanks! I'm wondering what else there is but it won't run well with fussy injectors. We got them back... It was worse than just the one.
A stethoscope is very good to check injectors with. And faster. Just put the probe on each injector while running, and you can hear the clicking of each injector.
@15:18 - "Way to interrogate that........" This engine is about to take a trip to a CIA interrogation cell........ Franny, great job with your diagnosis, patience, and admission of possible fault waiting a year to put those injectors back in the car. I'm so impressed with your video series. Can't wait to see if the car is ready for a drive through the CO mountains once you get those injectors back!
I know... I thought that sounded funny when I said it. lol! We'll get this sorted :)
Great troubleshooting process swapping injectors and good test to see if they actually are working.
That engine bay is so clean, I can't stand it! Well done. One thing I've learned rebuilding Porsche and Volkswagen engines that are air cooled is, you have to either rebuild the wiring harness yourself or buy one from someone who makes them. I'm not saying this is your problem, but in the end it will be the weakest link once you get the car back out on the road. Has been for me several times until I realized this.
Thanks!
Nice clean engine compartment, Looks Brand new, nice Ratarossa shirt.
Thanks! Scott is just the best :)
@@HeidiandFranny look at the pot calling the kettle black! Lol!
I had an 85 Carrera for 20 years up until 2 years ago when someone offered me silly money for it (I had intended to keep it for the rest of my life)
It was the European model, so no cat, more power and a gearbox oil cooler.
When I first got it there was also an idle issue, but not the same as yours, but maybe related. Mine would want to stall if you suddenly lifted off @ low rpm. It found that there is an idle airflow adjustment screw (just behind the idle valve if I remember correctly). By turning it out a little I got rid of the problem, but if you turned up its out too far it raised the idle above nominal.
My impression is that the idle valve is just fine tuning, cold running and to compensate for the air con.
Yup, you are totally correct. I bet the different fuel here vs Europe was the reason it needed an adjustment. Our car was running fine before so I don't think that is the issue. The manual says it needs to be adjusted with an exhaust gas analyzer. I want to get the injectors all working properly and then verify each component to be sure everything is up to spec.
One thought I had was to listen each injector with one of those stethoscope things used for finding noisy bearings. Injectors are quite loud when running at the full 12 V. This would save the work of swapping them around. I never tried this since all my experience with missing cylinders has been with carbs, but I did mess with an injection system for a racing buddy who'd added a turbo to an L Jetronic equipped engine. The injectors on a bench were quite loud without the engine there to drown them out.
I've used long screwdrivers in my ear when I didn't have the stethoscope. Works almost as well if the engine isn't too loud.
Thant's a great idea! I really need to pick one of those up. Thanks!
A great clearheaded Video thanks so much Heidi/Franny
You bet!
Even if I knew as much as she does (I don’t) my hands and arms would never fit in those places. She has it all! BTW, nice to see a clean engine compartment.
Thanks so much!
Great camera work and troubleshooting process. I bet Scott appreciates you Ratarossa sweatshirt shout out.
Thanks! Scott's sweatshirt is also the warmest one I have :)
Wow, great diagnostic algorithm. I have the same car. A common issue with the 3.2 is busted head bolts , which could drop compression but you may see an oil leak. I didn’t know that you could bench test an injector with a small battery. Great video.
I checked every head stud when we had the engine out They were all secure :)
@@HeidiandFranny You were very thorough, excellent work.
Great diagnosis.
I think you are right about the injector having locked up because it sat unused for a year. With such small components inside the unit it doesn't take much corrosion - or even dried oil or something - to cause a mechanical issue. I wonder if the resistance across the connector pins was spec or not. No worries, sounds like RC has your back. Great find!
Thanks! Yup, RC had to work on them a bit and that wasn't the only one... I did check the resistance and it was in spec at close to 3 Ohms. I'm really curious how it will go when they are back in.
Franny a master mechanic on 911s no doubt !!👍🇩🇪😀🌟
Franny, regarding the analysis, next time the first step (also easiest) is after the engine has run, take an infra-red temperature gauge/pistol (these now cost less than 20 USD) and check the exhaust manifold temperature per cylinder … You have a car lift so that's easy. (then the spark and then the injector (which indeed you did). Also I think I saw a small spark 23:36, so I suppose the jet needle was stuck - so it should be repairable, we will see). Success!
Awesome problem-solving. It's like you're an engineer or something :)
And how nice to be able to identify the problem without having to tear it down much at all. And of course you went from easiest to hardest in identifying the problem, which is obviously the smart way to proceed.
Thanks! :)
It was so easy to work on cars in the 90-th comparet to the today’s cars .
Great job.
Very true!
Such a great explainer on the diagnostic process
Thanks!
Brilliant diagnosis Frannie - so patient and diligent!
Big up @ratarossa and the sweatshirt!! Yo
Scott!! 👍
Scott is just the best!
@@HeidiandFranny Brilliant channel Frannie and Heidi - keep it up, we love you! ❤️
Wow I learned something today watching this channel. Excellent video and troubleshooting.
Excellent video. On my ‘94 Carrera the EMS tool allows to diag the injector by pulsing each one 👍. Can initiate test, run around and listen for click click in engine bay. 👍. I probably didn’t need it, but, while engine out, I sent injectors to RC 👍. They are local to me,
Looks like you’re getting close 🥳
Thanks! Getting back to it tomorrow :)
I dont even have a Porsche but loved watching this, great video. Reminds me of working on 1275 minis...always an issue. Haha. Great content, keep up the great work 👍 👏
I bet the MINIs are fun!
Franny, Mini's are alot of fun! To drive 😉🤣. British engineering, easy to work on but temptremtal. You should get one
Awesome video Franny, one of your best, the diagnostics are an excellent resource for the enthusiast. Thanks for sharing 😉
WoW! FI is not something I'm familiar with, but you really systematically isolated the faulty component. WoW, great job Franny. IF I had a suggestion, it would be that you secure your lovely ponytail. I was a little frighten to see it moving around so much with the engine on, and the belt right there. I only remember from my H.S. days, (69-73 ~ ancient I know) of a friend that had long hair, and working in the machine shop during class on a lathe, it got caught and pulled his head down right to the machine, and only by yanking his head and pulling the hair right out of his scalp saved him from serious injury. He had past shoulder length hair.... . Anyway, great job, watch out for those purdy locks :-) . So glad you figured it out so methodically. Great video. :-)
Thanks so much. Yes, Heidi had at me with the clippers ;)
Exceptional diagnostic skills!
Really enjoyed you walking through your diagnostic approach. Coming out great!
Thanks so much!
Hi Heidi and Franny, I watched all of your Carrera 3,2 project movies within the last few hours and I have to say I love it so much. I never saw such nice and experienced people doing this kind of tutorial and explaining movies at such a detailed, charming and entertaining way. To say it in short, you ladies are superb.
I am looking forward how you will fix the erratic rough run / stall of your engine. If it’s not the coil
(where I could bet it is), it might be a good idea, to double check all the ground points you disconnected for engine removement.
I am although interested in, if you replaced the O2 sensor, checked the resistance of cylinder 3 temp sensor even if it’s brand new (and just impacts cold start). And how did you checked for any air leaks (smoke in the inlet manifold)? As said before, I am looking forward to see more of you…
Good luck, take care and thank you so much.
Cheers Alexander (Germany Stuttgart)
Thanks so much Alexander! I do need to go back and look at all three of those sensors. I have the old ones and they are working (I just replaced them because the wiring is falling apart). I did not replace the O2 sensor. I think I'll do that as well for good measure. I think they are fairly delicate. The ground points have all been cleaned. That is a good call. Thanks!
Well done!! The Poireau method Agatha would be proud All the Best ;0)
Hi you mean Hercules Poirot?
A good old fashioned mechanic's stethoscope can identify a bad injector also. If it ain't clicking it ain't working. Not sure if you could get it on those injectors though. It's pretty tight in there. I got the spark plug socket stuck on my '79 911sc once on number three. Took me an hour to get it out.
Never heard before about not removing plugs from a hot engine but makes sense
At least on these air cooled cars there are super hard to get back in... They just want to cross thread every time... Cold they go right in. They are right coming out too.
I love the way you troubleshoot! Naughty you, keeping them on the shelf that long after cleaning ;) I had mine ready to go in after getting them back, but waiting for 3 or 4 weeks. My Alfa with L-Jet ran like hell and sounded like a VW. I ended up driving it for an hour with Techron in the tank and it cleared up. It's funny- they tell us to install them right away, but we usually don't. Humans, sheesh. BTW, cool to see you wear ratarossa's garb!
I just have to add- those Bosch connectors on the harness side can push back into their housings while removing the harness. This happened to me on the throttle position switch and on one of the coolant temp sensors. Pulled my hair out trying to figure out why it was running so poorly 'all of a sudden'; it just wiggled back into the housing while driving. That one took a few weeks and new parts to figure out...
Thanks!! That's really helpful.. New video tomorrow morning and I did find something, but I'll totally check out the connectors. Wow... That must have been a real thing to figure out!! Awesome work!
@@HeidiandFranny Thanks for saying so. It was a true 'ah-ha' moment when I randomly noticed a pin connector just a bit out of place and not even with the others. I checked all the Bosch connectors I could find and found two. Good news is, you can push it all the way out with patience, bend the little metal tang up, and 'snick' it back into place in the housing.
Fantastic video - very informative and great, methodical troubleshooting. Thank you
Thanks!