"I have 1979 Mercruiser 470.
"I have 1979 Mercruiser 470. When I run the engine for about an hour it will not crank. It will not turnover it tries but just will not turnover it sounds like the battery is weak but it is not. I have tried just about everything resetting the time, changing points and condensors, coil, spark plugs, plug wires. The other day it did it and i tried a few more times to get it to crank and the solenoid started to smoke a little. The temp is fine while running usually gauge shows around 170. I am at my wits end trying to have a good time on the lake with the kids and have to be towed in. It should not be this complicated."
"I have 1979 Mercruiser 470. When I run the engine for about an hour it will not crank. It will not turnover it tries but just will not turnover it sounds like the battery is weak but it is not. I have tried just about everything resetting the time, changing points and condensors, coil, spark plugs, plug wires. The other day it did it and i tried a few more times to get it to crank and the solenoid started to smoke a little. The temp is fine while running usually gauge shows around 170. I am at my wits end trying to have a good time on the lake with the kids and have to be towed in. It should not be this complicated."