Engine overheating

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thatkidchris20

Recruit
Joined
Apr 6, 2006
Messages
3
1979 Mercrusier L6 165hp?<br /><br />My engine on my new boat is overheating quick. When i have muffs on it no water gets up to the motor. I hooked a hose up directly to the engine and it ran fine at a low temp. I have no experience with mercrusier so i have no idea what is wrong. From reading around ive got the impression that there is a pump in the outdrive, if so how do i know if its bad and how do i get to it to replace it.
 
Haut Medoc

Haut Medoc

Supreme Mariner
Joined
Jun 29, 2004
Messages
10,645
Re: Engine overheating

Welome to iboats :) <br />I would guess that your impeller is bad..... <br />I would recomend that you get Mercruiser service manual # 6....<br />Have a look at mercstuff.com....<br />If you have some tools & ability, it is not too hard....<br />There are some here that have mo better links so stick around....<br />If you use the rad 'Search' button at the top of this page you will find a wealth of information..... ;) .....JK
 
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thatkidchris20

Recruit
Joined
Apr 6, 2006
Messages
3
Re: Engine overheating

Is there a good site that shows how to replace it. Id like to get away without a manual. What should be the going rate to have a shop replace it?
 
jlinder

jlinder

Lieutenant Junior Grade
Joined
Jul 5, 2004
Messages
1,086
Re: Engine overheating

In general if you are going to be doing some of your own work it is worth it to get the manuals.<br /><br />What you pay for the manual is quickly saved by what you don't pay the mechanic, and by doing it right.
 
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