470 moan

[bigbrownbuku]

troubleshooting a slight temp climb on a merc 170 atm, tested a lot of cooling basics today, back at it tomorrow. cant shake the feeling the "moan" is connected to the o'heat. have heard about bodgy engine circ pump impellor to cam couple, could this be the source of my "moan" at low rpm?

 

[bigbrownbuku]

Re: 470 moan

moan isnt the engine circ impellor, goes away when its warm, im too young for this engine. gonna pull the boat tomorrow and recheck the pickup/pressure side of the seawater pump.