Folks,
I'm not exactly new to boating but I just picked up a 1971 Glastron Starflite with a Mercruiser 140, I/O. The boat has sat idle for about 7 years. The engine is free, turns over, and has compression of 130, 130,125, 60 in cyl 1, 2, 3 & 4. Not sure why #4 is low, initial thinking is...