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Harley Davidson Rich Idle, Black Smoke, Petcock Vacuum Leaking Raw fuel
Not a permanent fix, only if you are stranded on side of road from cheap vacuum operated shut off valve. Taiyo Giken vacuum operated petcock seal failed allowing fuel to bypass carb via vacuum port and over rich engine while running. Temporarily converting petcock to eliminate troublesome vacuum valve.
If your eyes burn and bike won't idle then see if gas come out of your petcock vacuum line when vacuum is applied...
Пікірлер: 25
Thanks for the video. I ended up buying a new one....which no longer has the drain port (must have been giving too many people trouble), but I also ended up keeping my old one and doing this same thing in the case of an emergency and I need something that works temporarily. I will say, the new Harley petcocks are much improved, and have a nice tactile feel when switching between run/reserve/off.
Alot of haters on here all those years ago til now talking out of their ass. First off I am a certified Harley Davidson Tech. second it is a vacum operated petcock so if the diaphram inside the pet cock is torn or has deteriorated you lose vacum. No vacum then feul dumps from your tank directly into the intake behind the cv carb. No amount of adjusting the carb fuel air mixture will balance out and it causes an extremely rich condition producing black smoke from exhaust. His fix is temporary only and IT DOES WORK TEMP. Even if you turn a petcock off that has this issue gasoline will continue to dump into the intake and flood into cylinders and past rings into heads. You can plug off the vacum line and the flange on the petcock where the vaccum line attaches leave petcock open to get your ass home then turn off the petcock, If you have sufficiently plugged the flange on the petcock it will not leak gas into the motor. if you do not get it plugged good enough it will pour gas like a faucet. You have to have the vacum or your carb cant pull fuel. It does work as a temp fix only. I have done this myself to get home and not pour a couple gallons of gas into a motor that isnt running flooding my carport. A new petcock is 25$ and up not 100$ Being a mouthy cunt and a keyboard cowboy shooting down a guy offering a legit temp fix that can help new bikers get home or make it to work until pay day and can afford a new petcock is just fucking stupid especially when the guy that made this video is actually right and the dumbass's talking shit dont even have a clue how the fuel system works in the first place. if you dont know 100% then shut the fuck up and ;earn something. honestly you guys talking shit should be ashamed because its the same basic principle your toilet works under you fucking morons!!!
My problem started when the strainer seal desegrated . replaced the $2.00 seal flushed out the fuel line pulled the carburetor cleaned out the debris. checked the vacuum fuel cutoff valve now it acts like it is not getting fuel after two or three miles down the road. Bring it back pull the fuel line apply vacuum to the cut off and get good fuel flow. Very aggravating. leave me dead in the road, then after awhile it will start go down the road and do it again. Never had this problem before in my 50 years of riding.
On yours it would be tempting to cut a piece of thin sheet metal to the pattern of the diaphragm seal make a gasket for both sides put it all back together and no more fuel cut off. eliminated with out worries of J.B. dissinagration into the carburetor.
2005 sportster petcock valve assy p/n 62169-02A replacement P/N62169-95B $59.94, found on Ebay. with tix $5.33 $65.27.
My pc is leaking like a sieve..never dealt with one b4..learnt alot from this video cheers 🍻
Theres a reason why the petcock is designed that way for the sportster. I'd be surprised if it ends up running normal after that. But I definitely won't be surprised if you end up having more problems and end up running lean because the carb can't pull enough fuel. Its actually better to run rich than lean. You should just order a new petcock and no its not going to cost $100+ it dose not have to be a harley davidson OEM part hit up amazon. And make sure your carb is tuned correctly if you don't have the fuel to air ratio dialed in perfect it will clearly have problems. I have a S$S carb and its worth it if you know how to tune one in because they are not the same as stock and definitely more finicky and sensitive. Good luck have a good one and always live to ride and ride to live and be safe out there
how will it make your bike have black smoke? that's what the needle and seat are for in the float bowl to stop the flow into the carb once the fuel bowl is full... I'm confused correct me if I'm wrong but I've never seen a harley carb with no needle and seat
Why? Just replace the diaphragm or the the whole petcock. Ridiculous !
So I’m not crazy for ditching the vacuum petcock all together and getting a new gravity fed one with a new screen for $30 after shipping?
my 95 electra glide had this same problem.
So you just removed the vacuum line, plugged the hole on the petcock side. Did you do anything on the carb side? Plug hole etc.
We're you able to use that peacock then?....I was told a vacuum operated won't work as a manual one , even if vacuum part is blocked off
did it stop the problem
I took off the carburetor on my 2004 harley sporster 1200 and cleaned the jets and put it all back together and noticed i dont have any fuel spraying out off my jet and now i dont have any fuel going to my carburetor at all any idea what is wrong thanks
@103GOC4RI
4 жыл бұрын
Fisherman 40 hi, this happened to my a few days ago... dis you find out why? There’s something I can do or should buy a new petcock. Will appreciate any help. Thanks.
ERGENT: i had taken apart my vacuum petcock bc i thought it was the problem with my bike but now i cant find out where the spring goes ive been searching for hours please tell me where it goes on the vacuum so i can put it back together
Get rid of it, buy the PINGEL and don't sweat the price. I do this for a GREAT living, and receive nothing from PINGEL, they simply are the BEST. YOUR WELCOME. Oh and the cheap ones are just that, CHEAP. The PINGEL is rebuildable too.
You can't get that fucking valve anywhere, there isn't one on ebay
the music at the end of this vid is the singer in pain it sounds AWFUL!
@karenl2529
6 жыл бұрын
Yes, mental pain.
Just buy a new petcock...... lowbrowcustoms they are cheap enough. You are gona end up on the road somewhere with a hot engine and fuel pissing everywhere sooner than later!!!
Fuel does not go through that vacuum line! The port you say dumps fuel into the engine past the carb is only for vacuum that sends a signal to the vacuum petcock that lets fuel into the fuel line from the tank to the carb. The reason for this is so if you forget to turn off the petcock after a ride fuel will not drain from the tank into the carb and into the engine. If you ever rode a bike before this thing was invented you learned to remember to turn off the fuel when you turned off the engine. I think you're just making it up as you go along. Sheesh!
As soon as he talked about JB welding the inside of a $150 petcock 🤣 I said a little prayer for his safety and moved on from this trash video
Wow that's pretty stupid.