Quote:
Originally Posted by Lexxani
do you get a metallic whine on startup? I was experiencing that problem when I broke a plastic chain guide in my drivers side head, that may have something to do with that 'wack' sound, if your chain is loose enough on start up to hit your cyl head.
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I agree this is the first thing that should be checked. In fact before you even start the engine again. When was the last time you rails were replaced. Also did you replace the tensioner rail. The tensioner rail is the only rail that wears out of the 4 that can be replaced from the top. It is often not looked at or replaced because people think its hard. It's not. 30 seconds to quiet down also seams like alot. You may also need a tensioner as well.
at 210K mile you are breaking into new territory. Not too many people have gone above 200K mile so there is not a good data base to say if you are possibly reaching the limits of the lower rails. One of the lower rains pulls around a curved rail like the tensioner rail so it will also wear. The rest of the rails merely act as a backup to stop chain vibration.
My plan at 200K miles was to pull engine do all rails, timing chain and oil pump chain. Clean engine bay and reseal engine.