So my car is misfiring and ive changed every coil pack and sparkplug and im still misfiring. What else can cause a misfire? I saw on youtube that there might be extra air coming from an opening on the plenum(intake manifold) so i might need a new gasket. Can that be it?

 

Instead of just guessing and replacing parts, why not pay the dealer the one hour labor charge to tell you exactly what the problem is?

Could be a vacuum hose leak and it could be something that you caused by replacing coil packs that were not the root cause of the problem. Plugs are good for over 100k miles.

Good luck

Telcoman

 

Dealership is going to charge me a lot. And thats why im on this forum to maybe save me money. My car has 120k miles so i think it was time for new coils and spark plugs and two of the coils were completely ripped.

 

Okay, so I had the same issue after replacing my spark plugs about a year ago.....

Try switching coil 4 and coil 6... If they are on the wrong cylinder it'll be multiple misfire.

 

Like the coil pack? Itself?

 

Without disconnecting any wires, just take off coil 4 and coil 6 and swap them... Those are main cylinders and will cause multiple misfire...

 

Alright ill try that today

 

I tried that but it just made it worse so i dont think that was it.

 

Whag else can make me misfire?? Besides sparkplugs and coils??

 

Many things can make engine miss, some platform specific, some not, some common things listed below. There is a lot to check which is why taking it in for a diagnostic might be the cheapest / cost effective way to solve your problem.

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