Pressure fitting is leaking, before i remove it i would like to know if its a simple O-ring or something more involved. ther a two fuel lines coming out, one is fine [no leaking} the other is leaking small amounts when vibration hits it.
SOURCE: removing harley davidson ultra classic gas tank
Drain the fuel either by siphening or removing the cross over tube at the front of the tank and letting it drain that way or just block off those cross over lines and leave the fule in the tank for removal.
0) remove seat
1) drain fuel
2) undo cross over line (bottom front of gas tank.
3) shut off pet **** and remove fuel line from pet ****.
4)there should only be 2 bolts holding the tank on, one at the top front of the tank and one at the back of the tank.
All in all a pretty easy (but possibloy messy) job.
SOURCE: HD 1979 fatboy fuel petcock valve leaking
Replace the petcock. The rubber diaphragm is ruptured. I'd also bet your fuel mileage dropped cause the ruptured diaphragm is allowing raw fuel to be sucked into the intake manifold.
SOURCE: fuel leak on quick connect fitting on 2006 harley wide glide
I just changed mine and it only took about an hour and a half.
SOURCE: how do i remove the fuel supply lines coming off
You may find these are factory hose fittings, they are put on with a special tool, and usualy can only be used once. Im not to sure how they come apart, but will have to be cut off somehow, and then replaced with standard hose clamps of the worm drive type.
SOURCE: the small hole behind the
It's a diaphragm problem most likely. These things are notorious for giving problems. I always suggest people upgrade to a high quality manually operated petcock like a Pingle.
But, if you want to keep you vacuum operated petcock, you'll have to drain the tank of fuel. Get a large funnel and an empty gasoline can. Loosen the petcock with the large funnel to catch the fuel and guide it into the empty can. Unplug the fuel line and the vacuum line. Remove the petcock from the tank.
On the backside of the petcock, there's four small screws. Remove the screws and carefully take the back off the petcock. There's diaphragm, a needle and a small spring behind the plate. Hold the diaphragm up to the light and gently stretch it. Look for holes. You can get a replacement diaphragm from your local dealer.
Good Luck
Steve
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