Ross17
Well-Known Member
I have a 1988 4.3 litre Mercruiser with Thunderbolt ignition. I am having a problem when the engine heats up, it will begin to misfire and quit. It acts like it is running out of fuel. You let it cool off for 15 minutes, and it will start and run fine. Engine temperature doesn't go over 170, and it runs fine if you leave the dog house off. Any suggestions?