Compression Test AND/OR Leakdown Test???

[thomas m]

Why bother with a compression test, unless you don't have a leak down tester???

If there is say, 10% leakage, wouldn't the compression be right up there???

Is it possible to have low leakage and still have bad compression numbers???

Doesn't the leak down test tell it all??? Low leakage and, if not, where the leak is originating???