On Fri, 19 Dec 2003, content22207 wrote: > Pre-ignition: > Spark ignites fuel mixture too soon > Sounds like constant drumming of diesel engine > Worst at higher RPM's, accelerating, under load, etc > May be unaffected by octane Definitely this description. > Pre-ignition can be a timing issue. Lots of higher mileage engines > have never been re-timed. This is a DMCH hipo crate engine, so it's got only about 5000 miles on it so far. Doesn't mean it was timed right in the first place, of course. > Is your car difficult to start cold? One thing I've noticed about over > advanced cars is engine has to spin much longer than normal before it > will catch. No problem starting ever, hot, cold, wet, dry, you name it. It always starts right up. When this engine was first installed, it would very occasionally die when I push the clutch in and drop it to idle. It'd just drop too far and not be able to recover. I brought the idle speed up by 50 rpm or so and that problem disappeared. It's still got a pretty uneven idle when it's cold, but that's not atypical for an engine with these kinds of modifications. Plus, I never did take it back to DMCH so Bill could adjust the idle, which he wanted to do after 30 days. It's been close to a year. I hope he's not holding his breath. -andrew To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx _____ Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/DMCForum/ * To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx <mailto:DMCForum-unsubscribe@xxxxxxxxxxxxxxx?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> .
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