i have a 1992 chevy lumina Z34 (3.4L DOHC V6 engine)
yesterday morning i started it it started fine but after school i tried to start it and it would crank but it wouldn't start and only way to keep it on was to rev it i got it goin for about 20 minutes and it turned it off and was able to start it. later i did the oil change and cleaned my spark plugs. after all this it sounded different and i don't have a clue why. and when i first got goin it was jerking and around 15 mh it stoped jerking and sounded right then around 60 it started to jerk and sound different again. then this morning it started it right up no troubles then i let it sit for a while and again it wouldn't start. well once again it got it goin and i got some fuel injector cleaner when i put some gas in it. and then i let it sit for like 20 minutes and it wouldn't start. so With all this could it be the fuel pump or what.How can i tell if my fuel pump is going bad?
ugh use a fuel pressure gauge on the rail key on engine off and key on engine on and compare to specsHow can i tell if my fuel pump is going bad?
I've had those symptoms, replaced the fuel pump, and nothing changed. Then someone looked at the fuel filter and it was completely hosed. So try changing that first, or at least taking a look at it.How can i tell if my fuel pump is going bad?
With the high cost of fuel, many people are running near empty, a lot. If you run out, you hose the fuel pump. If you run very low (below 1/16) you run a good chance of overheating the pump. I run a small amount (an ounce or two per tank full) of 2-stroke oil with my fuel to help lube the fuel pump. Follow the advice of checking fuel pressure at the injector rail, too.
