I have a 1985 mercruiser 2.5 liter that I put a 3.0 liter head and intake on.. motor crank over great but is getting no spark from the coil.. I volt metered the coil power wire and it has 13.85 when ignition is in the on position.. but when I crank the motor it drops to 6.5 volts and creates no...
I have a 1985 Chaparral 178 and it has the mercuiser 140 3.0ltr.. when I got it the motor was popped.. I have found a mercruiser 120 which I now know is a 2.5ltr.. I know its a drop in hp.. which isn't a big deal since I never ran it with the 3.0 I wouldn't notice difference.. now here is my...
