impeller in a Merc 150

[texasfish]

I have a 91 Merc xr-4 150, seems like I have<br />to change the impeller each year. The temp<br />on the engine reaches over 230 degrees!<br />After changing out the impeller the temp returns<br />to the normal temp. I have a friend with a Merc 200 that has never changed out his impeller after some 4 or 5 years. What could be causing this or<br />is their something else involved?<br />Any idea's....

 

[Spidybot]

Re: impeller in a Merc 150

If the impeller housing inside is worn/rough it might kill the impeller flaps.<br /><br />Do you hit sand a lot when sailing? Sand or dirt in the water gets into the cooling system and may blast the pump.

 

[JB]

Re: impeller in a Merc 150

Howdy, Tex.<br /><br />Try the Outboard Engine Troubles Forum.<br /><br />Good luck.