Re: Fuel Pump Pressure??

Posted by HH56 On 2009/3/19 21:14:26

Specs are 4-5 PSI. Believe that is determined by the spring pressure pushing on diaphragm inside pump. I've had issues with the ceramic fuel filter being clogged to the point it was hard to pass much and pump didn't seem to be able to do much--even though it looked clean the varnish seemed to coat the pores. Does the filter bowl fill completely or is there always air present--even after running for a bit. The air was the symptom when I had that issue. Also possible the inlet or outlet valves in the pump are leaking. Either would cause low or no suction & lack of pressure. Today's gas does evaporate quicker than the old did so empty after 3 weeks is something I'm used to. Added an electric pump just to fill things up after a sit, then off as soon as engine starts.