Question about 1998 Suzuki VZ 800 Marauder

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Engine gets very hot after short run /2 miles

Engine smells hot and creaks for minutes after just a short run. When over temp light comes on you can still remove the radiator cap and the coolant does not bubble out or steam. changed coolant but no good . oil level good coolant level good rad clean. ???

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  • lavins2002 Jul 12, 2010

    thanks for your help Azraelsrl


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This means that the coolant isn't circulated and on bikes of that age the water pump is the usual failed part. But you should also check the water circulation in the cylinder blocks.

Posted on Jul 09, 2010

  • lavins2002 Jul 09, 2010

    Hi Azraelsrl,
    I take your point but I have checked this by starting the bike and as it ran for a few minutes I found that the inlet (top) connection,and the outlet (bottom) connection were warming up pretty quickly,would this not indicate that all was OK with circulation.Also the pipe from coolant pump to rear cylinder heated up at the same time.

  • Azrael SRL Jul 09, 2010

    Not necessarily - the water in the tubes might simply be warmed up by conduction. But it's easy to see if the pump is working: take the radiator plug off and start the engine - you should clearly see the water flow. If it's barely visible - or not at all - then the pump is faulty.

    On the other hand if the water flow is good then the only explanation left is the fact that the water doesn't reaches all the way to the top of the cylinder heads - either you have a vapor lock or the water channels inside the block are blocked by lime and dirt.
    The only way i know to eliminate a vapor lock is to tilt the bike at 45 degrees up and run the engine for a short time. The dirt and lime can be eliminated with the help of the special cleaning solution that you can find in every car shop.


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