Logo

86 mercruiser 170 4cyl running hot where to start

mrmarske

New member
the boat wasnt stored properly

the boat wasnt stored properly for the winter
and now its running hot. i have a small fresh
water leak from one of the end caps on the heat exchanger and am waiting for parts to fix that but i dont think thats my problem.
i have a set of factory service manuals and i think it may have something to do with the fresh
water pump in the out drive. how much should this flow?

any help will be appreciated.
dont be afraid to get technical!
 
""boat wasnt stored proper

""boat wasnt stored properly for the winter" What is the antifreeze reading, above or below freezing? The outdrive impeller should produce several gallons per minute. The heat exchanger may just need rodding out the cooling tubes and pressure tested."
 
"im pretty sure the coolant/an

"im pretty sure the coolant/antifreeze was good to well below freezing. im an accomplished auto technician for nissan and from my experience the coolant felt pretty thick, not watery at all. im gonna try and run it and check the impeller flow tonight. it was pouring rain last night so i wasnt able to check it.

heat exchanger parts are here as well"
 
Back
Top