Zilla's initial autopsy:
 

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's hope the piston survived and it's 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's not cool.

I'd be all over that gas station, if there's 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's any chance severe detonation could have misshapen the plug... Here's hoping it's 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.


Attachment 43187

Attachment 43188

Attachment 43189

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

Ouch...

I hope that works out for the best. :?
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