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Mercruiser 1968 inline IO six cyl coo...

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casey golema
Posted on Friday, July 27, 2007 - 06:12 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

cyl compression check is within 10%,no water in oil,both water pumps work. in cold out cold water, engine overheats in short time. something keeping water from flowing thru engine. flows for a few seconds if in and out hoses switched then cold water in and out again and overheat. thinking thermostat but cant find one?HUH?

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