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  1. #1

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    bad problem after rebuilt....

    hey guys i just did a rebuild top end with new valves and installed everything back and now premixing
    so my problem is my 2000 gp1200r is missfiring like crazy
    i checked compression and 150psi on all , there is a spark in all wires ,you know it did same axact thing be4 rebuilt.
    what do u guys think problem might be? or maybe someone already had something like that ? please help.


  2. #2
    Moderator OsideBill's Avatar
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    Did you take the stator cover off and inspect the flywheel? Might have something going on up there.

  3. #3
    hows the crank?

  4. #4
    mrbtd's Avatar
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    When you say misfire is it bogging or just stumpling - Or is it that it wont fire consistently ?

  5. #5

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    Quote Originally Posted by mrbtd View Post
    When you say misfire is it bogging or just stumpling - Or is it that it wont fire consistently ?
    bogging

  6. #6
    Moderator RX951's Avatar
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    when was the last time the carbs have been rebuilt ?
    stock jetting ?
    also check the reeds when you pull the carbs..
    I assume it has the d-plate removed ?
    Is this a stock motor ?

  7. #7
    Like a chimp with a ball-peen hammer smackwave's Avatar
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    Are you sure you don't have the fuel and return lines reversed on the carbs?

  8. #8

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    Quote Originally Posted by RX951 View Post
    when was the last time the carbs have been rebuilt ?
    stock jetting ?
    also check the reeds when you pull the carbs..
    I assume it has the d-plate removed ?
    Is this a stock motor ?
    this is SBT angine wich seazed but only piston damage
    so i did a complete top end rebuilt , crank is true welded wich is sbt and looked fine , i did not touch carbs at all

  9. #9

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    Quote Originally Posted by smackwave View Post
    Are you sure you don't have the fuel and return lines reversed on the carbs?
    well 2 weeks ago it was running 68+ with no problem and i didnt touch anything wich carbs

  10. #10
    Moderator RX951's Avatar
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    how bad did it seize ?
    what caused it to seize?
    did you resolve the issue from it seizing ?
    was it an air leak?
    plugged inlet filter on the carbs ?
    misadjusted carbs ?
    I hope your crank is not out of phase from the seize.....sbt motor.....hhmm.....

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