On Thu, 01 Sep 2005 12:45:39 GMT, Backyard Mechanic
Is this by chance a 2.0 litre engine???
They have a very NASTY tendancy to drop #4 exhaust valve seat. If you
have a rough idle problem do a compression test. If one cyl is low
(likely #4) try tapping the top of the valve with the rocker at zero
lift and see if the valve stem "pops" up. If it does it is an almost
sure sign you have a loose seat. If it drops far enough to let the
piston smack the valve, breaking the seat, about 5 secons of running
will have peices of valve seat distributed through at leat 3 of the 4
cyls, totaling the head and pistons.
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