My 07 Chevy Tahoe cyclinder 4 Misfire

[Hardchevy]

hey guy

....I really need for this problem to go away
i have changed all my spark plugs and wires ....also all my coil packs and the #4 injectores

 

[MO Viet Vet]

Please list the code number(s)

 

[Hardchevy]

It says p0300 and sometimes it reads p0521 oil pressure sensor ... but right now its just saying p0300 ... I hooked the Genisys hand held scan system up to it and thats what its reading

 

[Ojustracing]

The P0300 a random misfire code. Are you looking at the Misfire counter? Does it feel like it is misfiring? or can you feel the skip?

 

[fjmichaels]

Might want to check O2 sensor wiring or sensors themselves. I had a random misfire (SES flashing) especially when it rained. Turned out to be a damaged O2 sensor wire.