1990 200hp overheating

[krogen42]

I've changed the thermostats, and the impeller. There is plenty of water coming out of the tattle tail, but it still overheats when it runs.<br /><br />As soon as it gets hot, I lose the tach which I assume is the regulator getting hot. <br /><br />Any ideas where to go from here?

 

[Dhadley]

Re: 1990 200hp overheating

Did you change the entire pump assembly or just the impeller? What brand parts did you use? Was it the high volume pump or the standard?

 

[krogen42]

Re: 1990 200hp overheating

It was the impeller and wear plate. I believe it was Sierra brand and did not know that there was an option in types. I also notice that now there is insulation melted on the stator.

 

[Dhadley]

Re: 1990 200hp overheating

I would strongly suggest that you get the complete OE replacement water pump kit. Since its been hot, changing the head gaskets would be a good idea too.

 

[krogen42]

Re: 1990 200hp overheating

Will do. Should the deflectors be changed as well?

 

[Dhadley]

Re: 1990 200hp overheating

There are none in a looper.