Is a '98 Ford Taurus 3.0L bent valve normal?

L

LeAnne

New member
I have just finished tearing down the top end of a '98 Taurus for a misfire in cylinder 1.
Pre-checks showed there was no compression in this cylinder. All other cylinders were fine.
I found a bent exhaust valve and evidence that the exhaust valve had contacted the piston - (whether this was the cause or the effect of the bent valve I don't know).
I replaced the valve and dressed up the seat -
My question: Is this common or should I be looking for a cause before I put this beast back together?
 
not normal, need to find out why.
I would think something held the valve open, then hit the piston.
stuck in the valve guide, but i guess it is good and loose as a used eng.
maybe the lifter stuck and would not let the valve go down.
or something that could stop the rocker arm.
could the driver have over reved the eng and floated a valve ??
 
It's possible in an interference engine. Did your timing belt slip or break? You probably should replace it while you're in there.
 
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