Running rough and flooding out

Asked by GuruP9Z36 Jan 12, 2020 at 11:17 PM about the 2000 Chevrolet Camaro Coupe RWD

Question type: Maintenance & Repair

I have a 2000 v6 3.8 camaro . When i got it water was
getting into the oil...I tore into it and it was the intake
gaskets were rotted out around the water jets. I fixed
that and put a new water pump and thermostat ...after
putting it back together it didn't want to run right ...put
a computer on it a it read o2 sensor changed it still
the same so i thought i would tune her up and see
what happened .. I put plugs,wires,coil packs, and
map sensor, and the cold start senors or whatever its
called and then it was reading a misfire on #6 cyc so i
changed the injectors ...after that it start running
worse i can unplug the wires to the injectors on the
side where the misfire was and it does not make it run
any different cant figure it out someone please help at
my wits end?????????????

1 Answer

26,850

The basics for a rough idle, check for a leak of some kind, fuel--egr--vacuum leak? Did you use a gage and check proper fuel pressure? My info says 48--55 psi, key on engine off, so if you're right about in the middle, should be fine. After you build up proper pressure, turn off the key, does the pressure hold for a bit? If the pressure drops like a rock, you have a fuel pressure leak, whether it's leaking from fuel injector or what? You can check vac line on fuel pressure regulator, if it has gas in it, the regulator is faulty. After a bit of cranking or idling, check the spark plugs, Are they wet with gas, are they bone dry? If wet, have to check for spark on those cylinders. I'm sure I'm leaving something out, but, all I can think of, at the moment.

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