when you say it has plenty of fuel pressure...how much does it have in psi?
please tell me all you can
went to store was low on fuel, came out of store truck started and shut off, could not hear fuel pump like usual. Changed fuel pump regulator and filter.Pulled fuel line off intake good pressure.Also pulled plugs checked spark good spark.
Truck will idle ruff if fuel is poured into intake
pulled plugs look wet
it seems to get good spark, and plugs are wet so seems to get fuel.could it be to much i don't know
truck wants to start but won.t
how much fuel pressure is plenty?how much psi?
does it have 60psi while turning the starter?
did the engine light stay on when it was running?if so,can you give me the computer codes?
engine light does not come on have no codes
almost seems like it flooded
no 60 psi while starting
and i will start if you put fuel in the throttle body?..you removed the intake and replaced the regulator?and you have no fuel coming out of the fuel metering body return line?please explain
these fuel pumps have about 90psi and regulate at 60psi...fuel must come out of the metering body..if not,,your pump is weak...do you have a fuel pressure tester with you now?
it's a new pump
i do not have a pressure tester
when push down you get about 6 inches of spray
when you try to start you get about 4 inches
how do you know how much spray you are getting/?is this not a vortec?this is a 1998 model right?
you need to recheck the fuel pressure with a known good test gage....these vortec engines must have no less than 60psi of regulated pressure,,sense there is no fuel coming out of the return and it will start when primed..i think the new fuel pump is weak..recheck the pressure
Notice: Do not allow the fuel pressure to exceed 517 kPa (75 psi) . Excessive pressure may damage the fuel pressure regulator.
The Vehicle Control Module (VCM) has integrated IC circuits that are fault protected; therefore, if a circuit has failed, the integrated IC may not be damaged. If that is the case, the IC will keep the circuit open until the fault in the circuit has been corrected.When the fault has been corrected, reinstall the VCM and check the circuit. Replace the VCM only if the circuit is still inoperative.Test Description The numbers below refer to the step numbers on the diagnostic tables.