Can't figure out misfire
#1
Can't figure out misfire
Hello I have a 2001 ZR2 Blazer. I still have a misfire after replacing plugs, wires, coil, control module, distributor, mass air flow sensor, throttle position sensor, air filter. Fuel pressure is right at 58. Trouble code p0300 I sometimes get a flashing check engine light as well. (At times its at idle other times its wgen crusing at around 60mph.)
Rpms Jump up and down at idle and sometime when driving. Runs better when cold. Blazer has 206k miles. I have had it for about 2mo. Any help would be appreciated.
Rpms Jump up and down at idle and sometime when driving. Runs better when cold. Blazer has 206k miles. I have had it for about 2mo. Any help would be appreciated.
#2
the 0300 is multiple cylinder misfire. What type of cap and rotor do you have, these trucks are fussy about that. Use only acdelco cap rotor and wires. Flashing check engine is high amount of misfires.