Engine Missfires

[aracerx]

Anyone have the check engine lite come on for "engine Missfires"...If so, what codes and resolution has occurred. thanks Mark

[SVTHorsnake]

um, warranty? and fast.

[Loren]

I would start with coil packs and spark plugs.

[TRAKCAR]

I deleted the code and never seen it again, 7K miles, happened 500 miles ago at Sebring.

It's a GT3 drive, drive, drive..

[porsche_guy56]

Its due to the spark plugs for sure!! replace them

[harmonyjim]

My guess is also the plugs or coil packs.

[danadaen]

My service advisor says the spark splugs should be changed at four years, but the Gold technician said there is some room with that.

What do you guys think?

I dont want to not do it and have some type of problem?

Thanks,

Dane

[JFP in PA]

All ignition system component's age with use, and as compression ratios go up, and obviously even more so in turbo or supercharged engines where the cylinder peak pressures escalate even more quickly, the more quickly the ignition components become unable to "light the fire", sometimes on just an intermittent level. So what you are seeing is not at all unusual or unexpected, and it is also why full race engines resort to multi spark and really high voltage ignition systems. The penance you have to pay for higher HP output on the street is more frequent maintenance and often higher quality ignition components.