Re: Mercruiser 3.7 water pump impeller removal????
I hope it's OK to jump in here with another question. I have been reading alot of the Merc 170 forums over the last 2 weeks, as I have been working on my old boat getting it back in shape and it has a 1986 Merc 170. I had to have the starter rebuilt and did the other standard maintenance (plugs, new coolant and oil/filter, etc.). I have brought it back to life, but even just idling for 5 mins the temp gets up to 180C. I am going to check the coolant pump this weekend and will test the water pump by pulling the inlet line off of the HX. The only other thing is to possibly replace is the thermostat (if it isn't one of the pumps). So my question is IF the water pump is bad, how do I access it? The coolant pump is easy access of course. I have ordered the manual for the Alpha 1 outdrive, but hoped maybe the experts here could help me. Do I need to remove the outdrive? Is the water pump on the engine or on the outdrive? From what I have read, working on or replacing it requires either lifting/ tilting the engine up with a hoist (which I do not want to have to do), or removing the outdrive. How hard is removing the outdrive?
Another question, the outdrive is rough going into and out of gear and there is some smoke coming from behind the engine when the drive is engaged. What would you quick-diagnose here? I don't know the architecture of the engine-outdrive linkage, but will once I get that manual.
Drewmeister (NEWBIE)
