L31MaxExpress
I'm Awesome
Who are my spark plug reading experts for a 2nd opinon? Plug looks like it is possibly too hot to me for this combination or maybe 34* is a smidge too much timing. Unless I am missing it, I do not see a heat line on any of those ground electrodes. R44LTS6 plugs currently, stock heat range for a L31. Cylinders 1-3-5-7, left to right. 1 and 5 look like they may be getting a small amount of oil on them.
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