Misfire
#1
Misfire
I've got a 2000 chevy z71 5.3 with 150,000 miles on it. The problem I'm having is while the truck is at a Idole it has a misfire. Doesn't skip while going down the road. The misfire is bouncing all over the place. Iput new plugs, wires . fuel filter, fuel pump, change te FPR coils seem to be ok. Ac plugs and wires. also change the intake gasket and still haven't solve the problem. I've have no sign of a blown head gasket. I'm running out of options. The cads doesnt seem to be bad. I've not change the o2 sensor. Cleaned the egr valve Can someone help me with this please?
#4
well it was only showing a misfire on 7 and 8 it and now it has moved to 1,3 and 5. The code just shows a random misfire. It seems to get worse when it gets warmer.
#7
Re: Misfire
One other thing, Do you remember what the egr code was? A defective egr valve would leak exhaust gas into the intake manifold. Also a vacuum leak at the intake manifold or throttle body.
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