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M60 overheating - any thoughts - how ...

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johnb
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Username: johnb

Post Number: 1
Registered: 05-2005
Posted on Thursday, May 19, 2005 - 01:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Our M60 engine is overheating with very low water flow. I wondered if there could be sediment in engine.
can anyone suggest methods to clean the cooling sysem or other things to look for

thanks
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ben
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Username: ben

Post Number: 5
Registered: 05-2005
Posted on Thursday, May 19, 2005 - 02:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

John, sounds like the problem I had. You can try flushing with radiator flush or more drastic dilute muriatic acid (some might advise against this). My block was so full of scale I had to take the head off and clean the sludge out manually and with a hose. Of course it could be a much simpler probelm like a blockage in any of the water hoses, a broken impeller etc. I presume you've checked all the obvious problems. I found a huge chunk of silicon in the outlet hose from my water pump for example. Take off the water inlet plate that goes into the block and run the engine for a few seconds. Water should shoot out of the pipe coming from the water pump, if not your problem is upstream of here (although you still might have a partially blocked block of course). When I took the inlet plate off the block I found an almost solid 1-2 inch wall of scale impeding the water flow into the block. For more related info check out the previous discussion below.

http://www.oldmarineengine.com/discus/messages/3430/6234.html?1108394316

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