Thread: Spark Question
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Old 07-05-2020, 02:58 PM   #9
30 Closed Cab PU
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Join Date: Aug 2018
Location: Wisconsin
Posts: 2,291
Default Re: Spark Question

It only moves in a small amount - the timing pin is rounded and the timing gear is only slightly dimpled. For a better feel, file the pin to more of a point, or use a Phillips screwdriver. Remove the spark plugs and the motor will turn much easier, you will not be fighting the motor/piston compression. It takes 2 crank revolutions to hit TDC on all 4 cylinders.

To Get close to TDC Cylinder 1 is to remove the distributor top and locate the rotor as in the picture. then use the timing pin.

Another way is to rotate the motor with your thumb on the #1 spark plug hole till the compression starts to force past your thumb, put a stick or pencil in the plug hole and crank it till the pencil is at its highest point, then use the timing pin for final adjustment for TDC.


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File Type: jpg TDC Cylinder 1.jpg (79.6 KB, 48 views)
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