I would predict a crank/rod bearing. Off throttle, the play in the gap causes a knocking sound. It will probably get worst over time.
Smell the oil. Does it smell of engine death? Ken Bogart ----------------------------------------------------- 96 Montego Blue FFS Coldside (His) 97 Black & Tan (Hers) 90 Crystal White (sons) ------------------------------------------------------ http://www.miatacare.com http://www.cincimiata.com http://www.miatagathering.com http://www.bcchallenger.org MiataMail.com list owner On Mon, Mar 29, 2010 at 7:54 AM, Stephen Rigley <[email protected]> wrote: > Hi, > > A "friend" of mine ran their 99 mk2 with low oil (read: this could mean > none) for some time. It was eventually noticed when the engine started > making noises. Oil was added and it still running. I took it for a spin at > the weekend, it accelerates + idles fine, no noises, but when lifting off or > *just* slightly applying trottle it makes a cyclic deep click noise. Its > been suggested that the crank is done for, but it sounds more top end to > me.. actually.. the engine feels pretty strong. I suspect its had its engine > wrung out on a regular basis too ;-) > > What should I be looking at first here? What kind of damage? > Likely the noise is crank floating back and forth? > > Cheers, > Steve > > _______________________________________________ > Miatapower mailing list > [email protected] > http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower > >
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