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Thread: gpr800 wont run

  1. #1
    yz450f's Avatar
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    gpr800 wont run

    ok so i have my 800 al back together finally

    i went to start it and it started rite up after relizing it was only firing on one cylinder. the front spark plug was new wen i installed it and wen i took it out it looked no different. no discoloration at all

    i check for spark and had no spark but the rear cylinder has spark.
    and both cylinders are gettig gas

    i think the coil is bad. what else could it possibly bee??


  2. #2
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by yz450f View Post
    ok so i have my 800 al back together finally

    i went to start it and it started rite up after relizing it was only firing on one cylinder. the front spark plug was new wen i installed it and wen i took it out it looked no different. no discoloration at all

    i check for spark and had no spark but the rear cylinder has spark.
    and both cylinders are gettig gas

    i think the coil is bad. what else could it possibly bee??
    swap the coils and see

  3. #3
    Theres no separate coils on a 66E like on the 12/13's. Its two hard wired sparkplug wires into ONE coil assembly.

  4. #4
    yz450f's Avatar
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    Quote Originally Posted by scittb View Post
    Theres no separate coils on a 66E like on the 12/13's. Its two hard wired sparkplug wires into ONE coil assembly.

    i no that

    so im asked dhoad for his and im hoping to hear back soon

  5. #5
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by scittb View Post
    Theres no separate coils on a 66E like on the 12/13's. Its two hard wired sparkplug wires into ONE coil assembly.
    damn, I guess your right!

  6. #6
    Quote Originally Posted by WFO View Post
    damn, I guess your right!
    Hey I know my way around some big 66 "E"'s- twins;0) Im pretty fluent with the 34 "Double D's as well".....lol

  7. #7
    dhoad's Avatar
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    Quote Originally Posted by yz450f View Post
    i no that

    so im asked dhoad for his and im hoping to hear back soon
    Sorry, the coils/electrics all sold

  8. #8
    yz450f's Avatar
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    thats ok

    im gonna ask my boss at my marina if he can get one for me off a junk ski

  9. #9
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    First off try other plugs if you have your old ones that you know worked throw those in and test it out. If its late and night and you don't have any plugs and the shops are closed swap the two plugs and see if then the front sparks. I can't tell you how many times I have had brand new plugs but they didn't work or the boat ran like crap after installing them. If that doesn't work then focus on the coil.

    Do to the fact that you had the entire electronics out of the ski I don't know how careful you were with them but its very possible that you broke one of the leads in the spark plug wires. Try cutting some of the wire back and see if that does anything. I haven't looked but the wires on the 701/760 can be replaced its just not an easy task

    Edit: I just looked at it and its the same idea as the 62T coils I will see if I can find the pic I am thinking about to better describe how to replace the entire wires.

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