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Old 10-09-2011, 07:32 PM   #6
tew45
Gone Wild
 
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Harley Davidson
 
Join Date: Aug 2007
Location: North Texas
Posts: 2,312
Default Re: 79 Harley Gas Cart Fuel Delivery

Bubbles are an indication of a fuel line leak. The carb is probably OK I would check the pump cover and gasket. Also old fuel line and hose to filter connections. can leak air. The engine is probably not blowing air back into the system. It sucks air in and the air bubble will seek the highest level or travel upward. I installed an outboard primer bulb in my fuel line and it helps prime the line when my pump is weak but it also helps put a positive pressure on the line which helps to spot leaks. It has limited use so I really cant recommend it. I run out of fuel fairly often and it helps me prime the lines. I just forget to add fuel when I have to go to the vineyard. But realistically you seem to have a fuel line leak or a leak in the system between the carb and filter.
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