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Message: <blockquote data-quote="Twista" data-source="post: 1073689" data-attributes="member: 8202">Hey guys so after 2.5+ years of owning my car i decided to drop my timing back down to 10. I really see no reason with having it so high on a stock car. So far i noticed my idle is better and sounds healthy. I also noticed my miss is somewhat gone. Im wondering if a timing is too advanced will it cause problems besides pinging at WOT .My spark plugs are also white coated which i been told means the engine is running to hot. From what i heard this is from the timing being so high. I was told the car was at 14 degrees timing, but found out it was at a whopping 16 degrees on a stock engine. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek!    :eek:" loading="lazy" data-shortname=":eek:" /> All this time i been running 89- 87 and 93 octane depending on my bank account.The car had a miss even if i used 93 gas. So now i have to replace the plugs since im sure the coated ones are maybe damaged from too much heat.Just wondering if to high of a timing could cause other problems other than the normal pinging. I was having idling problems during the summer on a warm start. If i started the car up during the summer right after i turned it off it wouldn't idle at all, unless i held the revs.During the winter i have a wicked idle surge on cold starts.Thanks.</blockquote>