Questions & Answers for: GMC Sonoma how can you tell if your fuel pump is bad

...tell by the sound that the new fuel pump was happier than its unfortunate ancestors. I hope this helps you or anyone who reads this, so that you don't spend 2 months puzzling over it and spend around ...

tell what is causing this? So far I have checked voltage at the pump (good), replaced the filter (new), I have had the tank apart and found bad connectors (fixed those) and although It runs better, it

...tell if a fuel relay is bad? If the fuel relay is bad, will the fuel pump still work? drop the tank ... use a brass punch to loosen the ring ... to find/replace the pump. the relay is operated by the ...

...fuel pump. I;m thinking bad ignition swiotch not knowing what kind of vehicle it is it is hard to tell. some gm cars and trucks have oil sending units that will not allow the vehicle to start unless ...

pump up" to take up the normal slack in the valvetrain. A "collapsed" lifter will then allow excessive valve lash and noise.VALVE LASH NOISEIf you can rule out lubrication-related problems as a cause,