Cooling problem Johnson 50HP 1987

[KjetilN]

I have a feeling that my engine is not reaching<br />high enough temperature at low speeds.<br />It is not running smooth below 2000 RPM. Even after 30 min at 1500 - 2000 RPM the exhaust cover and the water coming out the tell tale is cold.<br />I have noticed that when I start the engine the pressure of the water coming out the tell tale is low for about 5 seconds then the pressure suddenly becomed higher, like opening a valve.<br />Any suggestions?<br />(the summer in Norway is gone)

 

[rickdb1boat]

Re: Cooling problem Johnson 50HP 1987

Check to see if thermostat is installed.

 

[KjetilN]

Re: Cooling problem Johnson 50HP 1987

I tried to look for the thermostat today. The local dealer told me that it should be located in a housing just above the upper spark plug.<br />This should be fixed by 3 or 4 bolts to the top cover.<br />I looked around but could not find any housing.<br />Anyone have any idea where to find it?