Last time the codes read out the same,but said P 302 instead of P 301...... I did spray all them with wd 40 like you said .....

 

Go back and read post #27 - there are several other items not related to the coils/plugs etc. that can cause misfires.

At this point, I suggest that to diagnose it properly you need to take it into a technician who can check out the ignition, the plugs (since you haven't pulled them to check them), the valves, the head, the timing chain etc.. Otherwise you will just be throwing money at it, and likely not get it solved.

 

I'm gonna check the plugs tommaro , was wondering on how to check the coils... I saw something about swaping them? and have a appointment on tues. with the dealership

 

Pull the coil and move it to another cylinder , same with spark plugs, do not attemp to clean or gap the AC Delco iridium 41-103 plugs that should be in the engine!

 

Thanks... I think I may have found the problem.... the 2 cylinders that was coming up with a code were water logged.... on the plugs outter part even the boots to the coils had moistre.... so i cleaned them out with a air hose with the plugs in of course and cleaned and dried the two coils... I have new plugs and 2 rebuild kits for the boot part of the coils coming... just gotta to wait for them to get here.... I will update later if all that worked..

Side note... I will never bring my car in again to someone to detail it... I was short on time I usually do it myself .... I think they thought my motor was some sort of floatation device....lol

 

You are using AC Delco 41-103 iridium spark plugs!

 

Thats what I used firgured it's best to use OE for now till I work the kinks out..

 

So far problem solved.. I'll take it out tom. for a long drive... and check it again... Before I decide to cancel my appt.


Hope all that misfiring did't mess anything else up like the injectors or what ever else...???

 

Those AC Delco are the best for your Ecotec!

 

Well I think it is fixed and running strong once again..... I just wanted to thank everyone for their input and advice..... cheers



Brian