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  1. #1
    Wrench's Avatar
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    2000 GPR1200 "getting hot"

    Hi,

    I worked on this gpr 1200 for a guy a few years ago. He brought it to me saying he thought it was over heating. Would ride it for a while then it would lose power and eventually the beeper would go off. Last time I worked on it I found that the spark plugs were clean, I pulled the head and found a lot of pitting in the domes. I figured the head gasket was blown so I bought a used head and put a new head gasket in it and torqued to spec.

    He brought it back with the same symptoms, first I pulled the spark plugs and found they are clean again, and tops of the pistons look fairly clean. Compression is 120, 130, 120. I plan to pull the carbs and go through them and do the jetting and fuel return modification.

    I am thinking this thing is leaking water somewhere and possibly spraying it into the intake. There is water spots all over the exhaust pipes. Just not sure where it could be coming from. All the hoses are secured with no holes or tears.

    If anybody has any ideas or seen this on a GPR before I would appreciate some direction.

    Thanks

  2. #2

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    There’s a member that posted a thread about a hole in the exhaust of his ski. Maybe the exhaust has a rotted hole in it or something ??


  3. #3
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    I found it, thanks.

  4. #4
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    I haven’t pulled the pipe off to look for other potential areas of leaks, but I found this. The bolt has broken into the water jacket. There is water sitting on top of the carbs. It looks like water has been leaking around the bolt and deflecting off the plastic cover.
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  5. #5

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    That's a good find. I'd say you're on the right track for sure.

  6. #6
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    I guess I’m just not sure if that small leak would cause the pipe to get hot enough for the temp sensor down on the bottom to read hot.

  7. #7
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    Does it already have a D plate?

  8. +1 by:


  9. #8
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    Quote Originally Posted by Myself View Post
    Does it already have a D plate?
    I’m pretty certain it does. It has a racist or plugged in where the top sensor should connect.

  10. #9
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    It does have the D plate.

    I am expecting the carb kits today. Can anybody tell me what the pop-off should be?

  11. #10
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    Quote Originally Posted by Jonesyfxr View Post
    That's a good find. I'd say you're on the right track for sure.
    Well I thought I found the smoking gun and cause of water ingestion. But I cannot find and holes or cracks where water could be coming from the water jacket in the exhaust through that bolt hole. The dried water pattern looks like that’s where it’s coming from but I can’t see and holes.

    My next thought is the water jacket gasket on the head is spraying water at the carbs. Is that common?
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