Quote:
Originally Posted by great white
Exactly what is wrong with the petcock?
Jamie D has a trick for getting them to work. I can't remember what it was right now, but it involved modifying a diaphragm or something like that...
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Yep - Here it is:
Daugherty Motorsports - Motorcycle Suspension Performance and Modification
Quote:
Originally Posted by duffman723
tried that trick, but it sounds like its gummed up from inside somewhere.
ive read that if rust has gone through the petcock it will pit the insides and buildup will occur .
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Just some carb cleaner should fix that up. Are you sure that you modified the valve completely per the instructions in the link above?
Quote:
Originally Posted by duffman723
I have a friend doing the work, he got a gravity fed lawnmower tank to work no problem.
If I could convert this tank to a gravity feed, then my problems solved.
The vacuum is the problem
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FYI - your bike was gravity feed from the factory. The vacuum line is not a fuel pump, it's a safety device. I'm pretty sure it's your diaphragm that is causing your problems. Go back and check my site again to make sure that you've properly modified the valve and I think you will be all set.