I used a whistle and my socket wrench on the crankshaft to help me set TDC. I then, per the manual and videos on the internet used the crank shaft pulley timing marks and the location of the points in the distributor to make sure I was at TDC. I still got tons of leakage. I set TDC multiple times to make sure I was at TDC: just before the whistle stopped, when the whistle stopped and just after the whistle stopped, and let the whistle stop then back up the engine just a little (socket wrench on the crankshaft nut counterclockwise). I also called Lang and spoke with their technical support.
Got it thanks! I thought it had to be 100PSI. I follow what you are saying. I may try it again with the PSI set below the compression readings I got for each cylinder.Just like SMJ said you don't need much pressure for a leak-down test. You can pump up the cylinder with less then 100psi. Watch the gauge which will indicate the percentage of leakage. An engine in great condition should generally show only 5 to 10% leakage. An engine that's still in pretty good condition may show up to 20% leakage. But more than 30% leakage indicates trouble.