Found one plug (#1) physically damaged and squashed flat with impact marks.

Looks a bit worse than expected. I may tear into this later, but right now I'm on my way to FIE to lend a hand with 3 sets of fuel injectors for the club.

Let'* hope the piston survived and it'* only a dropped valve........

Oh no!
Wow..i wonder if it was the fuel then? Or a failed keeper/retainer

:(

Bummer, Chief

At least you can drive the green SCed Bonne while the green SCed Bonne gets taken care of.

Lol thats funny.

You couldn't here it?

Crap, that'* not cool.

I'd be all over that gas station, if there'* any chance they were to blame. Worst case, you'd probably get a free gas card or something to get you to shut up/leave the place.

I wonder if there'* any chance severe detonation could have misshapen the plug... Here'* hoping it'* not a damaged piston.

This isn't octane related as I first suspected.

This is a physical impact of some sort. I need to check compression next. Probably not until tomorrow. I'm thinking broken valve. Drove 5-10 miles on it after I noticed the miss. I WAS on 4 cylinders, as with the waste-spark method, the other plug on this coil wouldn't have fired with a dead short on this one.

It MAY only be a piece of a valve. Just no way to know. I'll do compression first, then maybe take an initial look in there with a borescope through the plug boss.

It'* not obliterated, so that'* a good sign.

Ouch...

I hope that works out for the best. :?
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