"Since this is a new thread, I
"Since this is a new thread, I'll re-mention my specs... 1985 Mercruiser MCM-140 engine with an alpha one (not gen II) stern drive.
Recently replaced the water impeller (everything except the water pump base), and installed a thermostat, which my boat has apparently been doing without for years.
Finally got around to running it tonight (with the water on, of course) and she overheated again.
I got up the temp gauge about 3/4 before shutting her down.
Is there *ANY* way I can really tell if my external water pump is working? I mean, barring anything else, it seems to me like there's almost no way to know what's wrong with your cooling system without taking everything apart.
Maybe the water intake is blocked, or one of the water tubes (before or after the thermostat housing). Maybe the thermostat I installed is bad, or maybe the water circulation pump on the engine is bad.
I'm about ready to give up on self-servicing becasue we're approacing full blown boating season and I wanna be out there!"
"Since this is a new thread, I'll re-mention my specs... 1985 Mercruiser MCM-140 engine with an alpha one (not gen II) stern drive.
Recently replaced the water impeller (everything except the water pump base), and installed a thermostat, which my boat has apparently been doing without for years.
Finally got around to running it tonight (with the water on, of course) and she overheated again.
I got up the temp gauge about 3/4 before shutting her down.
Is there *ANY* way I can really tell if my external water pump is working? I mean, barring anything else, it seems to me like there's almost no way to know what's wrong with your cooling system without taking everything apart.
Maybe the water intake is blocked, or one of the water tubes (before or after the thermostat housing). Maybe the thermostat I installed is bad, or maybe the water circulation pump on the engine is bad.
I'm about ready to give up on self-servicing becasue we're approacing full blown boating season and I wanna be out there!"