Question about 1997 Mercury Sable

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How do I figure out what Top Dead Center is on Cylinder 1?

1997 V6 Mecury Sable

I need to remove and replace the CPS on a Sable, and don't know how to figure out how to get the TDC on the first cylinder as per the instructions.

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An easy way to find TDC on cylinder one is to remove the spark plug from cylinder one, and then you can rotate the crankshaft manually (or by having someone tap the key) with your finger over the spark plug hole until the compression in the cylinder blows your finger off (you will know when this is). This is an easy way to find TDC if you are doing this yourself.... Once you get to this point you can also place a long screwdriver in the cylinder hole and then slightly turn the crankshaft by hand and watch the screwdriver handle move, you will know when it is at its highest point that you are at TDC. Hope this helps.

Posted on Mar 12, 2009

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