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  1. #1

    2004 rxp engine swap wont start

    I have a 2004 rxp i love the ski best one out there i rode it real hard a few times and it dropped two valves in cylinder number one and destroyed the engine... i found a donor for cheap from a local pulled that engine out and now it wont start it cranks and cranks but will not start i added four quarts of oil theres no coolant in the engine yet and im kinda losing my mind. the spark plugs spark the fuel pump works the top sensor hums. i poured gasoline in the cylinders and it still doesnt start i need some help guys please chime in


  2. #2

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    Timing.

  3. #3
    canuck's Avatar
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    What year is the donor engine ? Any fault codes ?

  4. #4
    i think its the timing.. its an 07 engine and i used my 04 front cover the cps is in a different location and the line up dowel is in a different location on the crank could a get the computer reprogramed or redrill the hole on the cps stator peice

  5. #5

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    Quote Originally Posted by redrocketcrawler View Post
    i think its the timing.. its an 07 engine and i used my 04 front cover the cps is in a different location and the line up dowel is in a different location on the crank could a get the computer reprogramed or redrill the hole on the cps stator peice
    yes, you can't just drop the motor in plug and play for an 07 to 04.

  6. #6
    what are the differences? between the two?

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