I have a 1989 OMC 3.0L 130hp in a 1989 21' Bayliner Trophy hardtop, 540 hrs on engine. First it was hard to shift so I lowered idle to 650. Now it shifts smooth but will not idle after a hard run so I did a tune up, (points, rotor, condensor, cap, plugs, wires, even a new coil). Now it starts...
