Overheating issue

[redright9]

I have a 1996 SeaRay, it has a 5.7L mercruiser with a mercruiser outdrive. I was very stupid and left my boat in a marina a while ago and never took it out to clean it. Since, when running higher speeds and when running in my driveway, the temp goes up and when at higher speeds gets almost to full gauge. When running slow, no problems... Any suggestions? Also, were can I find a service manual for my boat so I can perform maint. on it?

 

[67deville]

Re: Overheating issue

Not sure about the overheating issue,but I just bought a Seloc Mercruiser manual for my 120 on this site.They are great,they cover just about everything.

 

[Alpheus]

Re: Overheating issue

Sounds like you may have some growth in your water passages. I would not run it anymore until you get this fixed.

 

[MPII]

Re: Overheating issue

I found downloadable original mercruiser factory manuals for my merc 4.3 on 4shared.com. There are links on this site.

 

[redright9]

Re: Overheating issue

I couldn't find what I was looking for on that site.. Thanks though.. I am looking into a service manual to see about digging into it further.

 

[MPII]

Re: Overheating issue

I couldn't find what I was looking for on that site.. Thanks though.. I am looking into a service manual to see about digging into it further.

That's wierd, I found both manuals, over 400 pages each on that site. I got the links from this site. If you want to private message me with your address I don't have a problem sending you a CD. They are too big to email, over 100 MB.

 

[dubs283]

Re: Overheating issue

number one cause of higher rpm overheats on alphas is the lower gasket seal on the water pump is failing, allowing exhaust gases to be sucked into the cooling water

time for a new impeller/gasket kit install

also, as stated, check for marine growth in pick up area

 

[fjm308]

Re: Overheating issue

i had the same problom with my mercruiser 5.0 it was one of my exhaust flaps on the exhaust elbow assembly was sucked in the one side of the manifold.