allanballard@att.net writes:
Under what circumstances would a stock fuel pump - pump gallons of gas into
the motor?
Allen,
Here are two possibilities for your fuel leak problem.
A few years ago I opened my garage and found the floor covered and the
Tiger engine wet and filled with gasoline. The ignition was off and the float
valve was new and working. What I eventually found was that the gas tank
vent was plugged. As the garage heated up the pressure in the un vented tank
went up it over powered the float valve. In a Holly, that is about 10 psi.
After mopping and airing out the garage and changing the engine oil, I
drilled a small hole in the gas cap so it will always vent. The cork seal on
most old caps will leak enough to vent out, but I had found a new cap with a
good seal.
At an earlier time, I had another situation. I was changing the exhaust on
my Tiger. I had the rear end jacked up as high as I could and also had a
full tank of gas. The carburetor valve evidently had a slow leak that wasn't
noticeable during normal driving, but with the constant pressure of the
fuel above the carburetor, it leaked out over time.
John Logan
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