Believe it or not I got the Genuine AC Delco iridiums from Home Depot for $3 a plug.
It\u2019s very easy. My s3 has been stage 2 on e85 for the past 60k miles and I have had 0 issues. oil change, spark plugs, etc\u2026 all done by myself and it\u2019s easy.
Problem solved: I got a internally bad ac delco spark plug. Gap and everything was correct no cracks I could see literally just a bad plug.
Currently will be doing all fluids, filters and spark plugs so the car is properly serviced.
C\u00e2nd am luat-o, am b\u0103gat ni\u0219te bani, \u00een consumabile, \u00eensemn\u00e2nd anvelope, sistem AC (compresor, radiator, etc), ni\u0219te senzori de parcare ar\u0219i, discuri, pl\u0103cu\u021be \u0219i un etrier pe fa\u021b\u0103, kitul de accesorii, evident ulei \u0219i filtre, bujii... \u0219i am dus o la RAR.
spark plugs and coils (first ride was smooth I though yeah but then manifested again) main motor mount (better revision, nothing changed, the vibration goes on)
I recommend nothing with platinum. I've had problems with those in my 1980 gbody with a 305. I just keep it simple with old ac/delcos now. Keep it simple for less problems.
Problem solved: I got a internally bad ac delco spark plug. Gap and everything was correct no cracks I could see literally just a bad plug.
I bought eight new AC/Delco from eBay. While gapping the plugs, I noticed that in two of them, the ceramic was not concentric with the body of the plug. It's difficult to measure, but it's easy to see by eye. I'd estimate the error is about 0.02 to 0.03 inches.
I had the same experience and ended up getting a code. Swapped them out back to AC Delco and never had an issue.
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