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Spark plug heat okay?

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Big Dawg

Member
Joined
Aug 2, 2020
Messages
81
Can anyone tell me by looking at the spark plugs if they are running too hot. I went on a 70km trip.....with boost, the best its ran since ive had it. Next day car was running like poo. Popping, stuttering bogging..smelling like unburned fuel. Put a backup maf sensor I had new, changed the coil that I had for situations like this.

Also one of the plug wires was a bit melted as it was up against the Downpipe flange as well...( this may have been the issue the whole time) but didn'
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t see it until I removed the Downpipe to get to the plugs.
 
The plugs are NGK YR5 gapped at .28. I have new set of UR5 gapped at .32 that I can put in.
 
Those look good all around.

Ngk 4323 is a good one for iron heads
 
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