I took out spark plug No. 1 and put my finger on the hole. Let someone crank the engine until I feel and hear the compression, the rotor is facing #5 when I feel the air coming out of the hole #1. Is this crude test enough to tell me there is compression and the timing is not off. Please advise..
Or am I going in circles....
looking for SL Convertible/240 D/300 TD
420 SEL 1986
300 D 1978