Motor was over heating replaced water pump,impeller thermostat, took head off replaced head gasket as water in top cylinder,torqued head back on to specs. Done compression test 125 both cylinders,new plugs,cleaned carbies with lots of help from here.
Motor starts and runs easy, engine warm...
Hello there,
I have a 1987 evinrude 40 hp outboard.It was over heating I thought it must be the waterpump.I installed a new water pump and impeller. Started motor,let it idle for a few minutes.
Plenty of water coming out.Gave engine a rev up and motor started to heat up again. I had ear muffs...