1997 Chevrolet Silverado Repair Question
Mileage: 270,000 miles.
Chevrolet Silverado Fuel pressure Problem
when I started it agian it idled up high again then died and engine made a "fluff" noise and smoked from the front.
Last week I replaced the spark plugs, coil, control module, and checked the wires cap and rotor.
I do have a small valve seal leak too as well.
Last weeks fuel pressure test ran a high 60 psi. could it be the pump or pressure regulator?
Asked by joeburkAnswer
Recheck the fuel pressure-see below
I havent found a way to the store to get a tester yet, but when i try to start it it kind of "sputters" like it wants to start but doesnt. I think it is getting too much fuel somehow
Ok, I pulled the pump relay and tried to start it and it backfired LOUD out the tail pipe, i removed a plug to see if it was flooded and they dont seem to be, not wet or anything, the pump was priming until i pulled the relay
You still need to check the fuel pressure if its within specs and also if the injectors are pulsing/energizing-
Did a fuel pressure test just now..it ran at 60 PSI while KOEO and ran 60-62 psi while trying to crank...that seems kind of low to me at crank but 60-65 are specs. any ideas?
What liter engine is this-Are the injectors energizing?
It is 5.7 Liter engine. How can I find out if the injectors are energizing? Do I have to take off the upper intake? When I did the test at KOEO, the fuel pressure got to 60. But started to drop immediately as well.
The fuel pressure should remain steady for a few minutes not just drop immediately-open up the upper plenum and check for a leaky fuel pressure regulator/injectors