2005 AVEO will not fire on #2,#3 cyl.

[kirk]

I was getting a misfire code PO300 so, i changed plugs and wires thinking that mite be it and still have a misfire. Than I CHANGED THE COIL! Still have a misfire. SO NOW! I JUST CHANGED the cam sensor and still misfiring #2/#3 cyl. What can i do next? PLEASE PLEASE HELP! Kirk.

[thankful_ragamuffin]

You appear to have eliminated all electrical (firing) issues. Check the harnesses to the injectors. If they are good, and you have no "U" codes present, it is time to do a compression test and a fuel pressure test.

[kirk]

Thanks T.R., We did that also it was good. But still no spark from #2 or #3 spark plug wire. im stumped

[xintersecty]

I had that issue on a boat. Check for a fuses leading to the coil. Each spark can be on it's own fuse.

[avguy]

Have you load tested the battery, checked fuses, and swapped relays?

[RicochetRandy]

Valve cover gasket? Any oil on the plugs when you changed them?

[xintersecty]

Valve cover gasket? Any oil on the plugs when you changed them?

I have had this issue too. The gasket cover is easy to change.

[05Aveo]

also checked for a vacuum leak or the pvc valve. sometimes those make it misfire as well.

[Pickles]

Is there no spark or is it misfiring?

[kirk]

Pickles... there's no spark on 2 & 3...

Will check the fuses, relays and gasket cover after work today. Please keep all the suggestions coming!

Thanks