Cylinder#3 misfire code
Asked by 2000Chevy454 Sep 18, 2017 at 08:31 PM about the 2000 Chevrolet C/K 2500 Crew Cab HD RWD
Question type: General
I put a re man 454 in my 2000 K2500 Chevy truck,
long block, new fuel rail and injector harness and
#3 fuel injector from Chevy dealer, new plug, 8.5
mm wires , Delco cap and rotor, what can be
causing my misfire, driving me nuts.
4 Answers
2000Chevy454 answered 6 years ago
I have these new parts which are all new AC Delco, new fuel rail, injector harness, new injector in #3 cylinder, spark plug, wires, cap, rotor, throttle position sensor, idle air control sensor, map sensor in intake manifold, Purge valve, egr tube from intake to exhaust manifold, fuel filter, 8.5 mm wires from blue streak, what else can it be? Can egr valve cause a misfire?
EGR near number three ,may be possible , leaking exhaust header possible
2000Chevy454 answered 6 years ago
Egr valve is actually between #5-7 cylinders, checked compression on #3 cylinder and was 120, checked#1 it was between 135-140, Haynes manual says 150, my motor is bored 30 over, where should compression be 150 or lower?
