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Recent content by PeeJay

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    2008 Mercruiser 3.0 Alpha 1 Gen II overheating

    Thanks for your advice louc
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    2008 Mercruiser 3.0 Alpha 1 Gen II overheating

    Great news all. New manifold has rectified the overheating issue. It was severely blocked. I’ll keep that in mind if I have the same issue in the years to come. Thank you all for your help. Wishing you happy boating and a happy Christmas! PeeJay.
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    2008 Mercruiser 3.0 Alpha 1 Gen II overheating

    It is used exclusively in salt water. I will change the manifold. Thanks for all your help.
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    2008 Mercruiser 3.0 Alpha 1 Gen II overheating

    Thanks AllDodge. The boat is 16 years old with the original exhaust manifold.
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    2008 Mercruiser 3.0 Alpha 1 Gen II overheating

    Thanks again for your help. I have removed the exhaust elbow to see if there were blocked water ducts but they appeared clear. see photos. I couldn't see far down the exhaust pipe to check for blockages.. I wanted to see if there was a blockage in the exhaust manifold water ducts so I connected...
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    2008 Mercruiser 3.0 Alpha 1 Gen II overheating

    The thermostat housing is hot and so is the hose from the water pump to the thermostat housing. I’m not sure about the manifold. ( I have the water pump off at the moment so cannot start the motor.) Although water gushes out when the hose is disconnected, it seems like it is not circulating...
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    2008 Mercruiser 3.0 Alpha 1 Gen II overheating

    Thanks for your help. I have removed the thermostat and ran the motor with the thermostat removed to simulate a thermostat seized open. The motor still overheated with the thermostat removed.
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    2008 Mercruiser 3.0 Alpha 1 Gen II overheating

    fyi, the boat is used exclusively in salt water but gets a very good flush after each trip.
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    2008 Mercruiser 3.0 Alpha 1 Gen II overheating

    Thank you for your help. I have removed the hose from the thermostat housing and turned the water on to the muffs. There was no water coming out however, when I started the engine, water came gushing out. I removed the short hose between the thermostat housing and the manifold. I tried tap hose...
  10. P

    2008 Mercruiser 3.0 Alpha 1 Gen II overheating

    Hello all, when getting my 175 Bayliner ready for summer, I started the engine on tap/hose water. I noticed the temperature gauge go over 200 so turned the motor off. I replaced the raw water impeller even though when the old one was removed it was in excellent condition. I removed the...
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