Replacing head gasket. I saw a video on aligning TDC but it does not look lined up on the video.
Image (Click to enlarge)
Jul 20, 2021 at 12:46 PM
Head gasket replacement
1999 GMC SIERRA
SKOOTER24
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Good evening,
I attached the procedure for installing the distributor.
As far as the top dead center, remove the number 1 spark plug and put a screwdriver into the cylinder. Rotate the motor until the screwdriver comes out the furthest. When it does, the mark on the crank pulley should line up with the scale as in the pictures.
You need to make sure it is the compression stroke. The valves in number 1 should both be closed. Otherwise, you will be 180 degrees out of time.
Roy
I attached the procedure for installing the distributor.
As far as the top dead center, remove the number 1 spark plug and put a screwdriver into the cylinder. Rotate the motor until the screwdriver comes out the furthest. When it does, the mark on the crank pulley should line up with the scale as in the pictures.
You need to make sure it is the compression stroke. The valves in number 1 should both be closed. Otherwise, you will be 180 degrees out of time.
Roy
Images (Click to enlarge)
Jul 20, 2021 at 4:39 PM