Fred's Harley CV carburetor needs cleaning
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- Опубликовано: 1 ноя 2022
- Fred, our Art Director, has this Sportster that's been sitting for too long and the carburetor got all plugged up. It refused to respond properly to his "well meaning" intentions, so he dropped it off with me. So, here goes. It's just plugged jets. He cleaned everything else. We'll get those jets clean and put it back together.
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Guys like mike are the last of a dying breed, dont need no schematics, dont need the internet, they have done it long enough they can fix anything with there eyes closed. Wish the new generation would be more hands on. Love your videos mike.
Wow, thank you.
Love your videos, thanks! Fixing up an old FXR currently.
Thank You. I'm glad to hear that.
Another great video,now I’ll have something to refer to when I go to rebuild my CV.Thanks Mike
Thank You.
Hi Mike, i purchaed my first Harley (a 99 FXDX) and your channel has been a god send of information and know how. Keep up the goog work and i look forward to watching more of your uploads. 👌🏽
Thanks, will do!
Have these on both my shovel- and Panhead. Thank You for your tips never to old to learn..
Carburetors are always "ongoing." I'm learning the too.
Good stuff thinking of going CV on my shovel. Thank for the content.
Any time!
Hey Mike, hope all is well your way! Your comment about today's gasoline is absolutely spot on! I work on small engines, lawnmower man, lol! Most are air cooled and carburated, just like bikes. Ninety percent of our service issues are related to today's poor quality fuel. It doesn't last on the shelf or in the machine very long at all! Keep up the good work! Thanks!
Thank You. It's always good to know someone will back me up. I've got a good buddy who used to work for an oil company as a chemist. I call him and give him my unscientific observations. Then he verifies my thoughts that he can back up with real science. It's great. However, you and I have to clean up the mess made by bad fuels.
Thank you for sharing. Another great video, very much enjoyed it. 👍👀
Glad you enjoyed it
Mike great to see you thanks for sharing and God’s blessings for you all
Check the gas cock the diaphragm can get cracked and cause problems and flood the bike
Good point.
Ron Trock schooled me on CV carbs years ago before his passing. He had some neat little tricks. I still run one of his that he set up for me. Good video Mike.
Thank You. The memory and the carburetor are both rare treasures.
When I worked at the Corvette assembly plant,we used torque guns to assemble with to guarantee all were the same. Another excellent video😊
Thank You.
Awesome videos love em all man keep ‘em coming !!
Thanks! Will do!
Thanks Mike for another good video. One thing I've notices is the little rubber accelerator pump boots that come in the kits for various carbs, they seem to break down and crack faster than an original. Not much we can do about it but keep a couple spares around.
Maybe the kits on the shelf are old. Most bikes have fuel injection now.
Good morning Mr Pacific, Cameraman Mike, hope all is well. Nobody ever taught me how to rebuild carbs, I learned the hard way(2000 R6 w/ 4 carb bank ) but eventually, I figured it out. Removed the Dyno Jet set up and installed an Ivan's kit, she was a nasty little rocket. I bought vacuum gauges, the whole nine to sync them and found a simple bench sync works wonderfully. Funny, I used to use Lucas grease, the red and green stuff to wet all my seals and gaskets until I saw you using white lithium, which I use now instead. I'm so glad you're so fond over it because I swore by the application and people thought I was crazy lol. Truth be told, it creates a beautiful bond. Luckily we have a VP non ethanol gas station a mile away from my house, which I always use in my scoots which are both carb'd. Also, as you probably know, I believe that Sporty metering needle or slide needle is a very popular choice in the Twin Cam carbs when upgrading, supposedly helps with throttle response, I forget the exact years from which Sporty. Personally, I don't drill my slides or get too fancy with reinventing the carb, just jet them and set them up properly, always has worked for me, knock on wood. I run a CV 40 on my 2002 Night Train and a Mikuni 42 on my 2002 Electra Glide, love them both equally, the smoothness of the CV and instant throttle response of the 42. Always love a good carb rebuild video. Take care of yourselves and we'll see you soon.
Thank You. It's nice to be told we're on the right track once in a while. And the stuff you're doing sounds interesting. Take care.
Hey Mike like always you do great work and yes they are not racing cab s but they very good cab s I been running on those cab s for 32 years and 290 th KS and I never had to play with the cabs
And, there you have it. Nothing succeeds like success.
good breakdown Mike. it's a good carb (cv) I've used them on pans, shovels, EVOs, and twin-cams. all, when jetted and set correctly run well. and there are still plenty cv carbs around.
That's true.
I like to run amber driving lights too! thanks for sharing. Love the CV, run one on my 79 Shovel.
Cool.
Interesting video Mike. Personally I like the Mikuni VM on my 83 Shovelhead. Always good to know about CV carbs too!
You know, I always have this to say. "The carburetor you run should be the one YOU like." It's how your motorcycle should be. It's all about you. I run the stuff that suits me.
Thanks for the great video! One thing to prevent sludge build up is to always run supreme fuel. I never use regular in small engines. Thanks
And never let it sir too long with fuel in it.
Great video! Kudos to the photographer!!😎
Thanks for watching
Never worked on a Cv but interesting to see the guts,
Thanks Gentlemen,
Glad you enjoyed it
Dude your freakin awesome by the way! Just wanted to let you know that.... I like your videos man there real top shelf first class!
Glad you like them! Thank You.
Great vid! You are awesome to listen to.
Glad you think so! Thank You.
mike good video, i rebuilt my holley screaming eagle double pumper i was intimidated at first but now it's something i can do anytime ! You must have stock in the lithium grease plant ! lol
Shhh. Don't tell anyone.
Much respect sir! Rob Ohio... got a 1977,79 old school Springer chopper. Was built Indiana, show bike. I found it after 10 years of show. Its ride for me!! Love your video s sir! Keep on keeping on brother
Very cool. My Knuckle is an old show bike. The coolest thing to do with a show bike is make whatever changes you need to make it a rider and do so. I think they really look best between 70 and 80 mph.
I'm adding seat soon KNqueen, already did bags, your exactly correct sir, awesome video
A King and Queen seat with a built-in "stash box" would be "special."
Yes, and I do leather lol
Cool.
I’m so glad your here !!!
Thank You. Glad to be here. Hey, we're glad you're here too.
The only thing you might have touched on is the idle mix screw hidden under the welch plug. These are adjusted way too lean from the factory to meet EPA emissions standards. They are good carbs, though.
Thank You.
You are AWESOME Mr Mike
Thank You.
I've swapped quite a few in and out and as a general rule the closer to stock it is the better it works and the more I like it.
Cool.
Thank you Mike been watching for a couple of years.... Kool beans .... Slick Dirty DOZEN M.C old school O.G .😊 keep it up 😂😂😂😂😂😅🎉😊
Thank You.
✊🏻👍👌🙏 I’ll remember this video when I get into my cv . Thanks for tip on LB swap meet . 61 flh is up and running here . Found leak down test 70% on rear cyl. 40% on fnt cyl. Rear head bolts loose and rear cyl had one stripped out stud in case . Re ringed & cyl hone . Back together and kicks over !!!- always start by owners manual start procedure . That worked - 😁 well ; amazing what people bring ya -
Moral of the story -
✊🏻👍👌
Very cool. Enjoy!
Good video as usual.
On every carburator I've rebuilt, I replaced the Phillips screws with Allen heads.
Me and those lead alloy carb screws that distort when you put a Phillips screwdriver anywhere near them just don't get along. 👍
I have trouble tolerating those carburetors. But, there they are. I get it.
Nice work. Experience pays.
Thank You.
I have a 2000 model FXDWG that I bought just this past February.
I bought it because it is carbureted.
I'll need to do this carb overhaul eventually.
It's not a difficult one.
Thank you so much.
Read the rest. Go for it.
I have stripped out so many cv bowl screw holes with those snap on screwdrivers it insane. Never with any other screwdriver only when using my snap-on. I prefer using them because they grip better and never cam out the head but they have so much more torque they will strip the whole out like crazy
I don't have that problem.
Hello Mike, hope all is well. Good Vide as always.
Thank You. Hope all is well with you.
@@pacificmike9501 I am good, Thank you.
Mike
If you look at the screws on that Mikuni carb they have a dot on the head indicating that they are JIS ( Japanese Industrial Standard) . If you find a Philips JIS you will see a better fit and less of a tendency to rotate out on loosening and tightening.
Found this out working on Japanese bikes and cars.
Cheers
I know you re correct. When I worked on Keihin carbs alot, I kept allen screw kits for them and automatically installed them the first time I took the carb apart.
Nice one Mike😀
Thank You.
Thank you.
You're welcome!
Hello Mike and Mike . How are you ? Thank you for this video. Getting a bit cool here but still some dry pavement.
All good. Watch out for the oil slicks.
I have the exact same black handle screwdrivers, and I know how old they could be, yet mine, the same as yours have been looked after and still work fine. As they say, look after your tools and they'll look after you.
My tools have been gathered over my lifetime and they really have taken care of me. I still have tools that were in my first toolbox my Dad gave me for my tenth birthday. Those black handled screwdrivers are Snap-On's I bought much later.
Thanks for the interesting Video a have a cv carburetor on my Evo sporty
Glad you liked it!
Another way to check the Excelerator pump jet nozzle is to put a little gasoline in the bowl and take the rod and push down on the diaphragm and some gas will squirt out if not it’s clogged. Also using a JIS (Japanese industry standard) screwdriver will not allow you to strip the float bowl screws out Japanese screws have a different pitch then American screws.
Thank You.
it is nice to disassembly Mike
Thank You.
Howdy. Any chances on doing a rebuild video for a Bendix/Zenith carburetor? Great videos you make. Thanks.
I haven't even seen one in a long time. I ran one for years on my Shovelhead. I bought it new, modified it a bit, then replaced it when my girlfriend bought me an SU. In the eight years I ran the Bendix, I used an Arlen Ness " flow ring" inside the air filter and I removed the choke plate and shaft and plugged the holes. It worked well, 'til I fell in love with the SU.
On my cv carb, 1984, in the accelerator pump you have two tiny ball bearings that go in the holes by the o rings
Not in the later ones.
Mike, I know too well what you're talking about!! Had to clean my 05 carb after it sat for almost 2 years after my massive heart attack a couple of years ago, went to the local Harley Davidson dealership to get a rebuild kit, and I wanted an extra emulsion tube because I cracked mine taking it out because I removed the high speed jet before breaking loose the tube(it looked like jello in the carb). The young fellow at the parts counter said we don't stock anything for carburetors, they are outdated and I don't know anything about them much less what a emulsion tube is, we only have fuel injection parts because that's what Harleys have 😂. He went to the back and came back with someone else and they showed him how to lookup carburetor kits and parts on the computer, when the other fellow left he told me, Sir I thought you were joking when you asked for that part and turned red 🤣. Keep up the great videos.. what is the shelf live on Harley oil, I have 3 or 4 quarts that are a few yeas old?✌🏻
I think, as long as the containers are sealed, it should be fine. But, I'm not a chemist.
Hey big Mike, starter complete new, wont engagement, gonna tear clutch down tomorrow. Did see washers missing behind 3 ball bearing clutch cable assembly. Keep tearing it down. Thinking clutch basket nut came lose
Sounds like a pain to me.
are these CV carbs anything like the old mid 80's ford vvcarbs ? , great vid . thanks
I don't know.
Good video mike, I recently got the 46 Knuckle back from mechanic and he told me to run premium 98 octane in it instead of the 91 I was using, it did seem to run better. Mike, I have to remove the chrome trim that is on the gas tank, I can see the little grub screw that holds the badge on but I'm not sure how to remove the trim, is it just pressed on. I have searched some forums but no luck as yet. Thank you for any help you can offer.
There should be 2 screws, although someone could have glued it on. 91 Octane is what we're all tuned to because it's the best we have. I don't know how much compression or what combination you have, but I'll bet it runs well with that gas (98).
I lost my cv carb in a house move and never looked back. The SU has taken its place on my evo.
I'm a fan.
I swear this cat is the biker Bob Ross. Same exact energy and patience. Wish i had a fella like this as a neighbor so i could hang out and learn from him. This in a way is like that tho i guess right? What carb were you mentioning that you said you could adjust for elevation on the fly? I have an 03 wide glide. Only mods are a stage 2 big sucker air cleaner and vance and hines pipes. It still has the factory carb and intake so im wanting to upgrade that but not sure what carb to go with. Any help would be much appreciated
Carbs are always a matter of personal preference. The old carburetors were like tractor or "industrial" units you could adjust main and idle needle while running. The only carbs I can think of today like that, would be a modified S&S or an SU that you can easily adjust by the side of the road.
@pacificmike9501 I gotcha, I really appreciate the reply my friend.
Mike is there a formula you use to determine how much fuel a carb needs in order to run on a specific sized engine? 50cc vs 1000cc as an example...
We used to figure it on car engines. 1 1/2 times the displacement in cubic inches of the engine = the CFM of the carburetor. With bikes, it's just been experience and Manufacturer's recommendations.
After just finishing a S&S super E rebuild, I feel like the CV carbs is a lot easier in comparison.
They are certainly different from each other.
Hi Mike Gotta s and S e gas flowing out the over flow tube
Something in the float valve.
Hey Mike,
I bought a 1981 Shovel last year and it hat a Dell‘orto PHM 40 installed. Should I keep it or change it? As this was changed on purpose some time ago I was wondering what the benefits of a Dell‘orto are. Can you help me with that?
Other than that keep up this flow of amazing content.
Just a matter of preference. They were very common at one time. They are still available from different aftermarket suppliers. I've seen them used in a lot of applications. One of my friends used to run a pair of them on his Knucklehead drag bike.
I'm putting a Keihin CV on my '55 FLE per one of your videos.
I've never put one on a Pan, but I've seen them.
@@pacificmike9501 Saw your video where you "out fueled" your friend on the newer/hotter bike. We had an SU we couldn't seem to get right, so we're custom jetting the CV, to see what we can get out of that. I'll let you know how it turns out.
Mike what carb do you prefer? You started to talk about one in the vid that you can adjust on the fly without changing jets?
My SU. My Linkerts.
Hiya Mike, cameraman Mike, Fred, and wireless mic... float level question on that CV: it's got a 40 thou tolerance (0.040) of "correct level". I'm here about 12 feet above sea level. You're a couple thousand feet higher if I remember correctly. Would varying the float level for elevation (higher measurement number/lower bowl fuel level for you, opposite for me) compensate for the variation of air density? Obviously at some point jets need changing, but for a few thousand feet difference, would just the fuel level difference be "enough"? Same for "hot/humid" (here in FL) and "cool/dry" with similar elevations?
I don't think so, but I've never considered it. I've certainly run larger fuel bowls. The one on my SU holds about twice the capacity as it started out with. With a wide open throttle, uphill, outrunning a very hotrodded Evo, it really helped. I don't think it affects the richness of the mixture.
Good morning Mike, I put a kit in the cv ,but after letting the bike sit for 10 /20 minutes I have gas dripping out the 2 small holes in the bottom of the face of the venture, changed float height lower than recommended but still leaks ,any thoughts
Something is holding the float valve open. Try cleaning it again. Possibly, the needle and seat (float valve) are dirty or damaged.
You said you prefer a carb that lets ride in variable altitudes. Which carb would that be ?? Thank you
I want to be able to adjust without changing jets. Adjust the needles on a Linkert or turn the mixture screw on an SU.
hey Mike, what size jets you use on that carb ?
Whatever came in it from the factory. This is an "all original" 883.
Hi Mike , I seen one of your videos where you changed jets in carb, I think it was Mike’s. You put a #50 jet in, said you were in high elevation , well I bought one recently from up in the hills and I’m in Florida. Elevation 33ft ! Do you think a 52 or 54 would be better at this low altitude , first time working on Electra Gilda , it’s a 1985 , thanks for any help . Oh it spits at me so thought jet. Might help
You are on the right track. I don't know what has been done with your motor, but, if a 52 doesn't do it, try the 54. But, unless you've got some serious stuff in there, a 52 will probably do it.
would have liked to know if the low speed jet has a hole all the way through or not. also show that the crud can plug the main jet closed. somewhat ok video but those are 2 important things i was looking for.
Yes, thew low speed jet has a hole all the way through. Everything can get plugged with crud in a carburetor.
Hello I was wondering what size are each of the Jets that are in the carburetor
I don't remember. I believe they were stock size in a stock bike.
Sounds like the CV isn’t your favorite carb. What carb would YOU prefer on a twin cam ?
Something larger, SU, Mikuni
Is that the same carb as what came on my 2006 1200 sporty Custom?
Most likely. There are little differences in the Keihin CV carbs from model to model.
Question Do you know how to find a s n s video rebuild in your library thanks mike
Sorry, haven't done those in a long time.
👍
Thank You.
Big Mike help, so some one made a 5 speed gear box that stuffed in the sporster 4... do you remember name???
I believe Harley started putting 5 speeds in Sportsters in 1991. Baker Drivetrain can do better than that. A gentleman named LittleJohn built 5 speeds out of four speeds for big twins back in the eighties in Colorado. But, there has been a whole world of geniuses out there doing way cool things with every model of Harley Davidson. Sorry if I can't remember it all.
Question on the CV CARB.
I'm transitioning from the magnetii marellii injection to a carb this winter. The mechanic told me that the CV carbs do not need to be retuned for elevation. It's self adjusting by means of the vacuum/pressure.
In your experience, is that accurate? I live and so far ride here in Kansas, but plan on doing some longer rides into the mountains once I get to retirement.
Wow. I question that one. But the vacuum diaphragm certainly does move the needle.
I've heard switching from fuel injection to carb or vice-versa is more of a headache in the wiring harness and electronics. Do a video on it if you can. I'd like to see what's really involved in that process. I was going to buy a 98 ElectraGlide but it had fuel injection so I passed on it. Maybe I was wrong about it, not sure. Good Luck
@@mikaldene7146 my 01 EG has the MM injection, probably why I got it so cheap. But it has run fine until I did the cam chain tensioner upgrade and swapped cams. Then the fight to get it tuned. It now likes the warm weather but really hates the cooler weather.
There's a harness overlay that seems to make it easier, said the guy who hasn't done it 😂
Something has to give, I'm tired of the the hassle with this finicky injection system
CV carbs are self-adjusting to some extent, but not enough to make up for large changes in elevation. The main jet and needle are usually fine, since the needle is vaccuum operated. Riders often just swap out the slow jet and adjust the idle mixture screw.
@@alanjones4358 thanks, I don't expect to have to rejet at altitude as I don't plan on spending a lot of time at higher elevations, more of a passing through type of trip. But it's been way too many years since I've messed with jets on carbs, and then it was automotive (a little larger and easier to get to than a bikes)
Mike I have a 90 EVO, it has round floats I am told it should be upside down to adjust can you give me the height and proper procedure.
Very hard to describe. It has to be held at the proper angle and then there is a specific measurement. It is very clear from the diagrams in the Harley Davidson service manual published for your model.
I was supprised that you did not use white lithium grease on the diaphframs of the carb, is there a reason for that ?
No need. The diaphragm is basically dry.
✌😎✌
Thank You.
HOWdy P-M, ...
Thanks = I'm always interested in new ideas and HINTS on the KEIHIN CV-40 or Screaming Eagle CV
Thanks Again
COOP
the WiSeNhEiMeR from Richmond, INDIANA
...
I just do them as I go. They are good carburetors. But, everyone has their own preferences.
You forgot the part where you have to buy new screws after stripping the heads out using the wrong screwdriver.
True.
I just got a 2001 dyna 88 twin cam, what carb rebuild kit do I need?
Congratulations! Now, get a kit for whatever carb you have. Is it the original carburetor? If so, order one for your bike. If it isn't, you'll have to figure it out.
@@pacificmike9501 I found a random brass bushing looking thing in my float bowl! I believe it is factory. But can’t figure out where the brass piece went. Any ideas?
What is the carburetor?
@@pacificmike9501 cv40
Can u show how to clean your front break please thanks mine needs dot 5 whatttt
What are you trying to clean, the rotor, the pads, the hydraulics? Be sure you're using what the manufacturer recommends for fluid.
@@pacificmike9501 the front break cal.
Mike, you got anything against a Super E?
-Joe
I got nothin' against anything. But, I like a carburetor I can adjust a whole bunch without having to change jets. That is why I run Linkerts on my old bikes and an SU on my Shovelhead. With the Linkert, I just reach down and turn the main needle a couple of clicks at the 5000 ft sign and about 3 or 4 at the 8000 ft. sign. The SU is more involved. I have to pull a screwdriver out of the little pouch on the back of my saddlebag and turn an adjusting screw on the carb an eight of a turn. I think I'll make a knob for it. I have one with an old turnsignal lever on it. The adjustments are very precise and well designed. That's why my preferences are what they are.
@@pacificmike9501 Thanks Mike.
-Joe
My 04 tc88 when it's cold the idle set normal rpm then after riding bike gets warmed up the rpm rises to 1200 plus rpms, what would fix this annoying issue? I live in fla. Sea level,thanks
Since you can set the idle, I'm assuming this is a carbureted bike. What's been done to it? Is it all stock intake and exhaust? Maybe a vacuum leak? Hard to diagnose long distance with no info.
@@pacificmike9501 it's carb bike only has4700 miles has yance&Hines straight shots looks like stock intake but the plastic snorkel box is removed with chrome factory oval cover put back on,I guess that would emulate Arlen super sucker basic idea? I bought the bike 6 mnts ago,like brand new,other than climbing rpm
Look at your spark plugs. If one is dark and one is light, you have a vacuum leak. Probably also needs a jet change, probably needs a larger low speed jet. First check for that possible vacuum leak.
@@pacificmike9501 that's what I will do thanks,I let you know
Thats the problem, it is not clear. I have round floats and they cover square floats. The procedure is diffrent for mine, I have seen some say the carb should be held vertical but no measurement provided. I was wondering if you had any literature covering this. None of my service manuals covers this particular CV carb with round floats.
Is it a Keihin? Is it a CV carb with no accellerator pump? If so, what year is your bike? Give me enough info and we'll figure it out. Years and models really make a difference.
Okay 90. That's an early CV. Sit tight. I'm looking for the appropriate manual.
I found a 91 service manual. I don't like to use the wrong one. But, the diagram looks correct for what you have described. The floats are round. I'm gonna try to word this right. With the float bowl off, hold the carburetor upside down (at right angle to the floor, or bench top). Use a straight edge across the float and keep it parallel to the floor. Now measure from the top edge of the perimeter of the float to the flange of the carb where the float bowl bolts on. The measurement is .725-.730". If you have a 91 service manual, it's on page 4-12.
Is it because of the breaderoil going in carb
I don't know.
I gave away those CV carburetors.
Different strokes. If you try all different the carburetors out there, there are pros and cons to all of them.
Close enough for horseshoes, hand grandes and nuclear warfare
Okayfine.
I really need to replace the actual diaphragm from the solider
Okay.
Run the same carb on my 05 Sporty1200R, - 48 - 50 MPG... EPA be dammed.
That's great mileage. Very cool.
Months old?? I like to freshen mine weekly. It goes off like milk.
True.
cameras ? you know cameras too ?
It was in another life. I was very much into photography from several directions.
I think your website is down.
Thank You. I'll check it out.
It's fine.
Hello! is it possible to put a carburetor on a 2004 injection fat boy?
It's possible, not practical. You would need to replace most of the wiring. You would need a complete ignition system, including all of the components. Then, you would need an entire fuel system, including the tank. The labor cost would be imense. I did it before the injection systems were as good as they are now. I did it on a 2000 Twin Cam dresser. Quite an undertaking.
You mean you don’t just throw the whole assembly in an ultrasonic? Lol
It was pretty clean when Fred brought it over. He just didn't clean the jets.
So it the gas we use now how a about taking the gas an taking the àllhall outof it
I'm not a chemist. This is over my head.
93 Ethanol free gasoline
I'll ask one of my gurus. Actually, I'm really ignorant about this stuff and don't believe everything I read.
Well mike it's been a wile but I'm back in washington thinking about getting harlydavidson scat maybe a 175cc model I think when I was young the guy next door had one but now I'm old have not the resort ounces to get one oh well it's OK to dream I loved it so much it was good as long as you never expected to much out of it I guess it's OK to dream Lemay Nelson
Dreaming is where to start from. It's the exciting beginning.
✊🏻👍👌🙏 I’ll remember this video when I get into my cv . Thanks for tip on LB swap meet . 61 flh is up and running here . Found leak down test 70% on rear cyl. 40% on fnt cyl. Rear head bolts loose and rear cyl had one stripped out stud in case . Re ringed & cyl hone . Back together and kicks over !!!- always start by owners manual start procedure . That worked - 😁 well ; amazing what people bring ya -
Moral of the story -
✊🏻👍👌
Enjoy!
👍
Thank You.