Mecury BlackMax 175Hp, Constant Beep and Overheating

[Robertse]

Hi, I Mecury BlackMax 175Hp, which Constant Beep and Overheating. I have replaced the impeller water pump, it has a strong pee (pumps water strongly), howver the water coming out of the pee hole is very hot. All help will be respected. Thanks in advance.

 

[racerone]

Blown head gasket can cause overheating.

 

[Dukedog]

do you have a water pressure gauge?... if so need readings at idle, mid range and wfo.........

 

[Chris1956]

Did you replace the thermostats? Rebuild the poppit valve?

A hot telltale is a sign on a lot of motors, that the thermostats are not working properly, or the cooling passages have a blockage.

 

[Faztbullet]

What year?

 

[Dukedog]

when ya guessin' with an over heat problem and no pressure guage... replace "complete water pump"(not jus impeller), poppit kit and replace both t-stats... its relatively cheap maintenace anyway... then install a guage....... jmo.