2008 Ford Mustang 4.0L - Mechanical Misfire Diag -IN REAL TIME-
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- Опубликовано: 12 сен 2024
- Thank you all for tuning in to Super Mario Diagnostics!
Today we have a real time diag on a 2008 Ford Mustang 4.0L. Unfortunately the repair was declined but I believe that this video may be very useful to those who wish to use pulse sensors to diagnose mechanical faults.
I hope you all enjoy, like, share, comment and subscribe!
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First of your videos I’ve watched. I have a very selective list of automotive channels I watch and you are now one of them. Outstanding job. It’s a lot like SMA. Very thorough job going the extra mile and well explained. Great video.
Agree with the leak down test , builds confidence in future diagnoses.
Connect a vacuum gauge to your compression tester. Helps you locate intake and compression strokes
I do this aswell.
What a great idea!
Awesome diag Mario, we need more of this in the industry!!!
Hi Mario, great video as always. Get some balloons and elastic bands, put the balloon over the end of your compression tester hose and seal it with an elastic. When you rotate the engine it makes it real easy to see your piston come up on compression.
Great video! I'm trying to improve my methods and retain the knowledge and practices the prove to be thorough and productive. Clear understanding of the information and techniques for diagnostic troubleshooting is key. So thank you for taking the time out of your day to share some of your knowledge of this ever changing industry.
These real time diagnoses videos are the best. Thanks for sharing
Good job, thanks for sharing with us. We are all getting better little by little keep learning!
Thanks Brian! Thanks for taking the time to swing by buddy 👍
I know it's alot of work making videos like this and I appreciate it. Another great one!
Real-time videos show how capable n knowledgable n skillfull you are. Thank you Mario. Needless to say you are improving more n more everytime appear on YT. Well done sir.
You did it right. Thanks to the scope and your training, you found the problem in a short time!
Gotta love the way, like any seasoned pro, you efficiently move to a diagnosis and plan.
🤣Mario your eyes lit up like a kid at a candy store when you clear flooded that thing🤣👌
Real time videos, you're rocking it man!
Good to know about clear flood variables when setting up the pressure pulse sensor!
Loved your information on the intake pulse waveform as well!
You're 100% spot on, sometimes knowing the finer details as to what is leaking is not necessary to the end state repairs when the heads coming off anyways, but I like how you take the time to teach😉
Great diagnosis and video!
Thanks brother! I really appreciate your support!
For some reason YT threw your comment into the held for review segment lol looks like I'll be having to check those inboxes regularly as well
Good job! Learn more, teach more. People like me appreciate people like you!!
Great clear explanation! Covered all the bases. Appreciate you taking the time to cover this in such detail
Love it when all the data adds up to a conclusion. Super vid Super Mario. Cheers Dave
Thanks Dave!
Great video. Once we knew the exhaust valve was at fault it would be nice to review the original wave form one last time at the end. Thanks again Mario!
😂 i totally thought of reposting the waveform i took, after the leakdown, and i didn't smh! Thanks for taking the time bud!
Good work Mario. You showed us technique and how to use the scope to our advantage. Great class!!!
that was great bro i think pulse sensor just made my christmas list, Ive been border line on getting one but that video just pushed me over the edge by showing it's use and importance
Great video, subscribed! Don't worry about getting interrupted,I love live diagnostic...it's a working shop, it can't get more real than that!
THANKS FOR YOUR TIME AND EFFORT MARIO. ENJOYING YOUR INSIGHT FROM THE GREAT WHITE NORTH.
I always learn something New watching your videos. Good shit as always.
I never get to use my pulse sensor. These damn Nissans dont usually have engine mechanical misfires. Its always a coil, plug, or injector. VERY rare to get engine mechanical misfires in the shop nowadays. Your videos are learning me on the pulse sensor. keep up the good work. 👍
Thanks Hakim! Funny you should mention that, the Nissan in the background of this video has a blown head gasket 😆 thanks for watching
@@SuperMarioDiagnostics 🤐.. lmao.. thats hilarious.. im dying to try the pulse sensor out on a HG diag.
Appreciate the extra steps you took to help others learn and confirm
I did like the the extra time u put in to show us and I like the no cuts video shows your not making crap up
I appreciate it buddy. I just hope that people don't think I make things up when i do cut my videos. I like to make the videos as short as possible. Took 8 hours to complete this video, my laptop has a hard time dealing with the footage 😆
@@SuperMarioDiagnostics I thought this was one of your best videos yet and I learned how to use the secondary probe for spark plug wires. I did use that probe one time and my wave from was upside down seems like u didn't have that problem though
Thanks! There are 2 options, positive and inverted, may want to give those a shot
Don't forget broken valve spring! Just had one a -little bit ago,cyl misfire- leaking exhaust valve.No discernable valve train noise. Very good video with the pulse sensor.
Your diagnostics and application convinced me to keep learning from you... subscribed 👍
Thank you! I hope you enjoy!!
Awesome video Mario !!! Thumbs up
Mario I am late comer to your channel so I am late on comments. Just wanted to say I am very impressed with the content . I wanted to comment on the subtle difference between your Brandon misfire video and this one to help validate my understanding and possibly help others. The Brandon video shows a weak intake pull due to a cylinder that has a leaking intake valve and this misfire video shows a weak intake pull due to a crank speed variation and the cylinder with the compression issue actually has a leaking exhaust valve. Hopefully I got that correct. Comparing wave forms they both look very similar but a closer examination shows some subtle differences which you did a great job of pointing out. This was an eye opener to me and illustrates the importance to continue to learn and explore. Thanks for your enthusiasm and knowledge transfer I look forward to reviewing all your current videos and eager to see your new ones.
Douglas please email me at supermariodiagnostics@yahoo.com
Great video Mario. From my experience this is what I have seen. I would have engine running with FLS in intake looking at intake pulses. If I see uneven pulses we have compression problem. My next step is to use mechanical vacuum gauge. If my needle is fluctuate we have leaking intake valves if not than we have leaking exhaust valves.👍
Thanks for the advice! I do tend to stay away from running pulses, since rpm have a lot of effect on the reading, and can be noisy. Maybe i should start trying it running, as i need to get used to it. Thanks for watching Ramon!
Great video , done 3 years ago and the knowledge still very relevant today . Thanks buddy for the knowledge shared .
I would have loved it more to see incylinder capture on the faulted cylinder probably in s separate video.
That was great Mario. Think I picked up a few tips to understanding this process better. It really shows what a time saver the scope can be.
Thanks Kirk! Glad you enjoyed buddy
All great videos Mario
Good job Mario, I appreciate that. Thanks
if the exhaust is leaky when the piston goes down it will suck back in and the intake suction will be weaker. so an exhaust capture may help may not. i'm thinking in cylinder pressure test comparing the suspect with another may be best. you guys keep teaching me its scary!!!
Great point! Another variable that throws me off with exhaust pulse waveforms 😆 hopefully the car is here tomorrow so that I can grab some in cyl waveforms! Thanks for watching buddy
OK GO MARIO , I WATCHED THIS VIDEO OVER AND OVER AND OVER AGAIN THAT'S HOW GOOD IT WAS BRO . MARIO I AM ASKING MAYBE NEXT TIME IF IT IS POSSIBLE TO SEE AN EXHAUST WAVEFORM VIEW JUST TO SEE WHAT THE KNOWN GOOD BASICS SHOULD LOOK LIKE . I HAVE THE SENSOR BUT HAVE NEVER ATTEMPTED AN EXHAUST VIEW MUCH LEST A DIAGNOSTIC USING THE EXHAUST VIEW . PLEASE KEEP UP THE GREAT CONTENT AND AGAIN PLEASE KEEP THEM COMING THANKS SO MUCH !
I'll definitely keep that in mind! Thanks!!!
This video was awesome. Thank you for going through the leak down test for our benefit. This video helped me and made want to seek the training you recommend .
Thank you!
Thanks for going the extra mile on this one sir I really do appreciate the leak down test also make me wanna go buy my own pico and pulse sensor and amp clamp to help diagnosis go faster can't wait for the next one👍
Huge thanks for the feedback. Glad to see someone curious to pick up on these methods! Thanks for watching buddy!
Your welcome thanks for the great content and definitely between you and Eric o at sma I'm looking into it I'm a tech at a independent shop in southern il and wanna help grow my knowledge and you are definitely helping me do that again thanks alot
Great video. I enjoyed this type of video 👍 I love when the pico comes out. Also in the back of my mind i kept thinking maybe a broken valve spring ?
Definitely. I wouldn't just pop off the head, i jumped the gun saying so 😆 it'd be a step by step thing. Customer declined any further inspection.
Thanks for watching bud
Crazy good diag in
Technically the diag was done in 15 minutes 😂 the extra 15 was to show the viewers that this is legit testing techniques
Thanks for watching buddy!
Loved this video, good watching your work in real time.
This is your best work yet, sir.
Thanks for the awesome advice on your diagnostics skills while Diagnosing a vehicle. Yeah I still use the leakdown on plenty of vehicles when needed . Keep it up mario
Thanks! Hope this helps build a bit of confidence when using pulse sensors to diagnose!'
Nice work and good diag process.👍💪
Thanks Jim!
great video. Like the way you went in depth and checked with leak down test! Thanks. and a video with the Pico is a video for me!
Thanks Mike! Glad you enjoyed buddy 👍👍
29 minutes 😱... alrighty I'll take a break , and lunch , and dinner and watch
Hands down , this is your best video yet brother ! Awesome !
Thanks Keith!
🤣Keith, agreed though Mario...awesome video!
Dang Mario, that's pretty impressive diagnostics. Nice extra step...just to be sure.
Thanks Wyatt! Great to have ya swing by 👍
Great video Mario. I like your techniques and flow of setup.
great video SM one thing to add is using your WPS500 in the 2 hole on your 4th channel and again on the dipstick tube to check the crankcase pressure all the best Mario
We did, indirectly, check crankcase! But you're right I should've gone in cyl. Thanks for watching Mark!
I use sandwich or freezer bags to store test leads. No need to tie them in loops and they don’t tangle with others in the drawer.
I put a small party balloon on the end of the compression test hose to check for TDC compression. Just watch the balloon. It is very sensitive.
The exhaust pulse test is no more complicated than the intake test. Mostly you look for the odd man out. Cylinder identification is straightforward. The exhaust pulse ends and the intake pulse begins at the ign pulse for the companion of the cylinder in question. Use the rotation rulers to ID all firing lines off of the sync reference. Find the odd pulse, note the ign pulse number at that point. The companion is the cylinder associated with the pressure pulse in question. On a 5 cylinder engine, set the rotation rulers on the pulse in question, 360* away is the ignition marker for that pulse. That works the same for all other engines too.
I finally got around to watching this, and I'm glad I did! Great video, Mario! Do they approve the repairs? If so, I hope you can share some pictures of the valves on your facebook group!
Thanks! I wish they did! No unfortunately client declined and took the car :/
Great diagnosis Mario! I saw there's a wps in your drawer, I'm just wondering can you do in cylinder pressure test instead of pulse sensor?
Hey MARIO great video. If I may this will help to what I do when in compression stroke I get some paper towel make it we and place it right on top of the spark plug hole it will shoot right out when In compression quick and effective. Also to more cranks on that crank pulley and you almost start that car boy! Awesome material keep it up. Congrats on the channel
Great advice brother! Thanks! That was my attempt and wrench starting the vehicle 😆
Thank You i’m learning so much from you!
Great video! I would’ve liked to seen you do an in cylinder with pulse sensor in the intake and exhaust Pulses at the same time. Would’ve been great for future diagnostic understanding. But once again great video!
Yes, in the heat of the moment, I totally forgot to go in-cyl. Will remember for next time buddy 👍 exhaust pulses aren't my strong suit, but I'll try and incorporate them as well. Huge thanks for swinging by!
Great video ,like the direction your going in
Yes quick accurate diag is a huge challenge for ton of people
Like myself lol
Great video Mario!! Really appreciate all the information given!!👍👍
Mario, I think you cemented my suspicions on my son 08 4.0 mustang motor swap! A misfire that keeps on after plugs, wires & coils. I took a piece of paper when at idle at tail pipes and saw passengers side tail pipe it suck paper inwards for a sec but worse when at slight load. Thought it was acting like a sticking valve? Motor has been sitting for months before getting time to put in.
I would listen for an uneven cranking rhythm during a clear flood
I use a scope quite often but can't afford all the extra gadgets for it to check intake pulse, running compression etc. So I still have to break out the leak down tester. I've seen a lot of broken valve springs and leaking valves on Fords over the last few years. Pretty common issue
The pulse sensor is 60 ish bucks from Cody, of Cody's Auto Diagnostics. Not to bad compared to the 300 dollar fls.
Yeah unfortunately customer declined going any further.
Thanks for watching buddy
I agree with others here, these Real Time diags are FANTASTIC. Thank you VERY much.
I don't know if I could make the call on a valve sealing issue without pulling the valve cover and doing a visual inspection. The scope can tell you if you have a top end sealing issue, but it can't tell you why. I would not want quote a head when it's a valve spring or a rocker arm broke off and jammed the valve open.
A scope can't tell you why? Of course it can! If I would've continued on with the scope based diagnosis, we would've seen an issue in an exhaust pulse, or with an in cylinder capture. But instead I went with a leakdown. I wouldn't just blindly pull the head 😆 I'd go in step by step as I did with the suburban misfire. A rocker arm falling off would result in a good leakdown, and a lack of valve opening, instead of valve leakage. Now a valve spring issue yes would cause sealing issues, but the client declined going any further. The relative compression test proves that there is a cylinder compression issue. The intake pulse isolated from the crankcase rules out cylinder wash/ring sealing issues. Of course doing a real time video, i did jump the gun saying "heads coming off." But if you've seen any of my videos, you'll see that I'm not the type to go a step further without justifying it. Thanks for the feedback! Thanks for watching!
Awesome job, thanks for the well explained process!
Good job and I enjoyed every second of it. One question ... will a MAP sensor work as a pulse sensor and/or a fuel tank pressure sensor ... I really gotta get one. Thx for your time bro 👍🏻
It will do the job, but not quite like a pulse sensor. It will read absolute pressure. Similar, but takes getting used to.
Ok good enough im gonna get ahold of Cody thx man
Anytime!
Oh and also your videos are getting better and better man. They have like a New Level and SMA kinda vibe. Good stuff man 👍🏻
That means a lot to me bud! Thank you very much!
Awesome work Mario that didn't take long at all... I agree I bet it's a valve not seating properly good to see how the capture looks on scope thank u for sharing bro keep me posted I'm curious as to what the findings are when the head comes off... Thanks again
Thanks bud, unfortunately the client declined going any further.
Great job Mario keep up the good work.
Your an inspiration Mario, Thanks.
Mario buy yourself a Whistler. The tool will whistle when the piston is coming up on TDC. I believe it's made by IPA TOOLS.
great one thanks
Awesome diag brother! I was waiting for you to go to in-cylinder, but leakdown proves your waveforms. Are you pulling the head?
Thanks Joe! Don't think she'll go for it honestly. As of yet it's declined, but you never know!
Can’t get enough of these pp waveforms your sharing, keep up the work Mario! Would love to see an exhaust waveform knowing exhaust valve sealing is a problem on cylinder 2 it may help you analyse the waveform? Thanks again
Good point! It's a weak spot of mine that i need to work on! Soon enough 😆 thanks for watching!
I liked the video and the process, but you asked what you could do different to increase speed. Also you didn't like doing the leakdown test. I have a tip. Leakdown test is easy! You put a low amount of air (30-50psi) and turn the crank until you feel it is hard to turn. Then you know your coming up to the compression stroke! Turn the crank until the lowest leakage and you know your at TDC or close enough to confirm leakage or no leakage! Once you know your on the compression stroke, you can always add more air pressure, just be sure to hold the crank as the piston will likely want to go back down the bore!
Felicidades Mario excelente diagnóstico, me gustaría mucho algún día estar en tu nivel
Muchisimas gracias! Me alegro que lo has disfrutado 👍
I know this video is well in your past now but can I ask. Why did your first look sensor show a weak pull on the mated cylinder 6. Cross referenced with low comp on cylinder 2 should indicate a leaking cylinder 2 intake valve right?
1. You and Brandon came to the same conclusion on your colleagues Jeep. But when you did the leak down on this one. The exhaust valve was leaking? Not the intake
2. It is WAY more common for the exhaust valve seat to leak than an intake valve. Can these delta sensors really be trusted to make a very expensive call?
Love your channel and supper appreciative of the content to learn from.
Got an email i can contact you at?
I'm not sure how to do that without sharing my email with the world so I'll send you an email to the one listed in your about info.
Cheers man!
Thanks!
Well done Mario. Good job buddy.
Thank you Sir Michael!
Loved the Video Mario 👍👍
great info Mario, thanks for sharing.... I have to get one of those pulse sensors... I did a little shopping at aes and got the wps500 to replace my pv350(still works fine) and also got the snap on 100, 500 and module... i''m gonna give the snapon sensors a shot...i'v been using a gm sensor for the low pressure stuff....once again great vid mario
Thanks Bill! Cody from Cody's Auto Diagnostics built this one for me, I'm sure he'll make you one. Remember the wps does do "delta" as i showed in another video
I should have entered the giveaway, but I usually step aside so someone else has a chance. I didn't know that about the wps500 having delta function... I havn't had time to even review instructions for anything in the past month, but will not miss a vid from you or from the "others".......love the vids so keep on brother
I explain it in my absolute vs delta sensor video, enjoy! And thanks Bill!
gonna watch now...thanks
Great video i was thinking you had a pressure transducer to do in cylinder check
I do have one. But decided to opt out and go for the leakdown. Thanks bud!
Great video Mario,
Thanks Mario, awesome stuff 👍👍👍
Great video Mario! Thanks for sharing with us! Definitely more work doing a leak down than setting up relative compression with sync and intake pulse.
Question, would you perform an in cylinder instead of a leak down for confirmation? Thanks in advance!
An in cylinder would've been pretty cool, might've shown something when the evc occurs, and maybe a weak pull as well. Don't know why I didn't think of it 😆 i guess to make it easier for those who stick to leakdowns to see for themselves that the pulse sensors are the real deal. Thanks for watching brother!
Super Mario Diagnostics absolutely old school versus new school. By the way love the home made leak down tester. I never coughed up the money for one, it’s always been on my list though.
As always thank you!
Great video, are you the only one in your shop who users a oscilloscope
Back when i was in that shop, yes.
My current shop, no, the shop owner also uses a scope
Great Video. Bro. Newbie Learnt a lot.....
The Pico is an amazing tool
Great content......👍🏻👍🏻for going the extra mile
What a great video Brother! Thank you for sharing that pulse sensor works awesome I just hit up Cody for one. Where is that training it doesn’t say in sign up Link?... Jay
Thanks! It's in Philadelphia, October 12 I believe
Very late comment but curious your thoughts on why the intake pull on cylinder 2 still had a similar pull to good cylinders when your leak down indicates a possible stuck or cracked exhaust valve? I'd be curious to know if there was more to this repair than just exhaust valve?
Real current (the electrons), flow from battery negative to battery positive. That's why I can never understand the Pico arrow on the clamp meter and I always get it wrong.
Correct, in the heat of the moment I reversed it 😆thanks for catching that!
"I do not own a leak-down tester". Any sponsors out there for this great channel?
😂😂😂
Great work buddy
Thanks for watching Cody!
Good stuff Mario 👍
Great video help a lot. Thanks
Great video man!
I have a question, with only the waveform you was able to identify an exhaust valve leak?
How did you ruled out a head gasket leak?
Jose J Sanchez Rivera the waveform is only one piece of information. Having zero complaints of overheating and almost non existent coolant loss, and having ruled out an intake valve leak, and the lower end, that leaves me with either a leaking exhaust valve or head gasket issue. Putting all that information together had me leaning towards a leaking exhaust valve.
Of course I could have taken a pulse at the degas bottle to rule out a head gasket issue, but I had little to no reason to suspect that.
@@SuperMarioDiagnostics Now I understand why a leaking exhaust valve was a bigger suspect. Thanks for the info, great video!
Where can I buy the portable hood light? Thank you and great video
It's from Milwaukee. Online would be your best bet
@@SuperMarioDiagnostics thanks man, really appreciate you.
Great video 👍 I learned from you Sir
Many thanks bud, glad you found this useful!
Wow I love this stuff!
Great Video
Top notch brother! And yes it's very Hot.
😅
Hey ❤ I have a 2006 4.0 misfire could it possible be the same issue. New fuel pump and still not wanting to crank
Where in FLorida are you?
Miami
Hi, i have a 2010 mustang 4.0 and engine does not tick or knock, it just sputters very bad, it will cut off if i let go of the gas pedal, i have to tap the pedal in order for it to continue running. Runs ok after 40mph any suggestions?? “Help”
Great job buddy. Ezzzy peezzy
Good stuff!