I've assembled all the parts I need to build the tester to do the leakdown test(thanks for the links!). I need a simple primer on how to find TDC on the compression stroke for each cylinder. I've adjusted the valve's a couple of times using Oly's primer, but am unsure on how to ck each cylinder for TDC. If I watch the distributor rotor in firing order and the rotor is pointing to the place on the cap where the plug wire goes and the points are about to break, is that TDC on the compression stroke?
