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  1. #1

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    GP800R carb accelerator pump - should I be able to blow through outlet nozzle?

    I am putting the carbs back together on my GP800R, and I put some hose on the nozzle where the outlet from the accelerator pump goes into the carb, and I tried to blow through it. I can't blow through the nozzle on either carb. Should I be able to? Or would I need to hook it up to compressed air to blow through there? I am wondering if they might be clogged, but it seems unlikely that both sides would be clogged.


  2. #2
    powerstroke specialist mikegp's Avatar
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    i believe it only goes one way.but i'm not 100% sure. pm osidebill. he will know for sure.

  3. #3

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    Quote Originally Posted by mikegp View Post
    i believe it only goes one way.but i'm not 100% sure. pm osidebill. he will know for sure.
    I tried blowing and sucking, but the gas has to flow into the carb, so that would be blowing. But I can't blow though either nozzle. I could try compressed air, but I'm wondering if maybe this is normal and it just needs more pressure than I can get by blowing.

  4. #4

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    Quote Originally Posted by mikegp View Post
    i believe it only goes one way.but i'm not 100% sure.
    I see why you said that now. My post reads like I tried to blow through the nozzle both directions. I only tried to blow in the direction that the gas would flow, but I tried it on both carbs. I'll edit the post to make it more clear.

  5. #5
    Moderator OsideBill's Avatar
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    The fuel should pump through those holes.
    I take the pump feed hose lose from the carb, and stick it in a little cup of wd-40. Then I manually pump the accelerator arm and check to see that the wd-40 is coming out the orifices in the carbs. a very simple test

  6. #6

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    Quote Originally Posted by OsideBill View Post
    The fuel should pump through those holes.
    I take the pump feed hose lose from the carb, and stick it in a little cup of wd-40. Then I manually pump the accelerator arm and check to see that the wd-40 is coming out the orifices in the carbs. a very simple test
    Thanks! I'll try that now.

  7. #7

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    That worked! Thanks, Bill. Note to self for next time - do this before you reinstall the carbs. It wasn't hard to do the test with the carbs installed, but it was hard to see what was happening. I could easily see the WD40 being sucked into the tygon hose I used, but I couldn't see it coming out of the nozzles. It was hard to prop up the light just right while holding a mirror, a hose in the WD40, and simultaneously pumping the accelerator pump. So I put my finger in front to the nozzles and pumped a few times and there was WD40 on my finger, so I know it works!

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