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I am running a clear plastic fuel filter before the pump and a K&N billet filter after the pump. Usually the clear filter is full of fuel. My car has been running like crap and I noticed that the clear filter is only half full when running. I ran the car quite low on gas recently and may have sucked some air in. Could this vapor lock be causing some fuel flow problems?
First off, why are you running a fuel filter before the pump? :confused:
Secondly, even though air is compressible, I would try to "bleed" the air out of there. The tank to pump line operates under gravity feed and suction from the pump only, so I can't imagine that the air is helping matters.
Re: Fuel filter before fuel pump question. (sb69coupe)
My old pump was FULL of rust from an old fuel tank that was replaced. Just to be sure the lines were ok I thought I would stick a temporary clear filter between the tank and the pump. It has been fine so I guess now would be a good time to get rid of it. :yesnod:
I had a simular problem though my fuel filter was before the carb. My fuel filter was only half full and eventually ran dry. Upon further examination I found my fuel line had a clog in it. I blew it out, replaced the filter and fuel pump, everything works great know. The filter is full of fuel. Also check your tank and see if the fuel sock is covered in crap. That could also be part of your problem.