[TAQuest]

What I do now is use one of the open fittings that came with my compression tester. I cut a finger off a thin rubber glove and fasten that over the end of the compression tester fitting with a rubber band. Install that in #1 cylinder. You will know when it's on compression stroke because it blows up the finger. That's my new 'go to' when installing a distributor.

["QUICK-SILVER"]

TDC During overlap both valves will move when you work the crank back and forth a few degrees.

TDC Compression the valves don't move when you work the crank back and forth a few degrees.

Clay

[TAQuest]

Originally Posted by "QUICK-SILVER"

TDC During overlap both valves will move when you work the crank back and forth a few degrees.

TDC Compression the valves don't move when you work the crank back and forth a few degrees.

Clay

Right. I thought I was lucky when I looked down at the timing mark and it was already near zero and the valves looked closed. Didn't have to move the crank so I didn't see any valve movement. Super confident that I was at TDC on compression. Made it so I messed with the timing way more than I should have. Wasted a LOT of time.