Hello guys, I had a #8 misfire and black plugs on #2 happening only when boosting a few times consecutively playing.
I suspected (hoped) its a seal and read posts here on them and am visiting here to share mine.
It recorded #8 because @high RPM it can get it wrong. The misfires were always logged at high revs.
Long story short Felpro told me after asking for a code on the parts card 190919 (decoded = 9/19/2019) they had a bulletin for the date having larger than spec seal mount ID. Well WTF! I guess it was not as important as the Tylenol recall.
They sent me a new set from this year. How about some pain and suffering and labor compensation eh?
I pulled the valve cover today and found the below. The car did not smoke not even boosting, did not use oil unless ran hard but even @WOT no smoke seen by my dash cam or in the lights back there at night.
One of the plugs and the #2 intake seal as found today. I'm changing them all.
I got these misfires randomly never fouling or rough running but always after a couple WOT series but not every time. Then finally I had a good play time with some competition doing several WOT blasts and the engine missed after letting off and I guess burnt it off enough in a minute or two. But it made things more urgent.
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