I have a 1986 Bayliner Trophy, with an OMC chevy 350, and Volvo outdrive. It was having problems getting past 9 or 10 knots. Last night I did a compression test and all the cylinders, except 1 and 3, were in the 120 range. 1 and 3 each read 25 psi. There couple be several problems, block...
