Quote:
Originally Posted by Jim2
Philip, a little late with this but if you ever need to verify TDC 1 remove the spark plug and insert a straight stiff piece of wire about 5" long so it's resting on the piston crown then turn the crank pulley back and forth with a breaker bar and you will definitively be able to feel TDC with your fingers holding the wire.
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A pencil works good for that too.
As you turn the crank back and forth a little while watching the Z1 mark you'll notice the crank has a small window of turning back and forth where the pencil or wire won't move down at all. The Z1 mark on the pulley should be right in the middle of that window.
If the window of crank movement is more than around 10mm - 12mm before the piston at TDC and pencil or wire starts to move downward it's sighn that rod bearing is possibly worn.