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How is this possible?

Discussion in 'CVP Stage 1 Tuners Kit' started by Troy, Oct 8, 2014.

  1. Troy

    Troy Member

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    I bought the CVP slide and tuners kit to fix the ongoing popping sound that my bike was making...Well the popping stopped but now when I am finished riding I stink like exhaust. I have never had this problem before...Bike exhaust smells super rich now yet there is no popping, a little minor popping from the rear of the exhaust but no carb popping anymore. Can anyone help me out with this? It is driving me plain old nuts...
    Troy, Oct 8, 2014
    #1
  3. hotroadking

    hotroadking Super Moderator Staff Member

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    You solved the popping with too much fuel,
    back down the pilot jet, set the screw at 2.5 turns
    out from bottom, start there
    hotroadking, Oct 8, 2014
    #2
  4. Troy

    Troy Member

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    I have also lost top end speed. I can't go any faster than 145kmh now...
    Troy, Oct 8, 2014
    #3
  5. Troy

    Troy Member

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    I guess I should provide a little more info...I have an 04 xl883 with a dragtron intake, k&n air filter, vance and Hines 3.5 inch slip ons with the standard baffles (which you can see right through so I know that they are pretty much open) I'm running the 44 for my idle and the 175 for my main as stated in the directions. Can anyone see a problem with this set up?
    Troy, Oct 8, 2014
    #4
  6. cowboy

    cowboy Moderator Staff Member

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    I think I did the 45 & 180 on our 06 xl 883 with the 2in hooker pipes & see through baffles ,with the big sucker air cleaner , no popping & will run 100 no problem & still have a bit left to go & will cruise all day at 75 with me on it 175 lbs & wind shield
    cowboy, Oct 8, 2014
    #5
  7. Troy

    Troy Member

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    Now it makes even less sense to me...45 and 180...I would think that would be way on the rich side if mines too rich.
    Troy, Oct 8, 2014
    #6
  8. Roadster guy

    Roadster guy Well-Known Member

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    What size jets did you remove before the CVP kit went in? Did you use the CVP emulsion tube?
    Roadster guy, Oct 9, 2014
    #7
  9. JohnnyBiker

    JohnnyBiker Well-Known Member

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    I agree with HRK. Drop your pilot down one and reset idle mix. When you put the carb cover back on it is possible that you pinched the rubber diaphragm and you now have a hole in it. That will cause the condition that you are describing. I just had a similar issue on my 96 Sportster.
    JohnnyBiker, Oct 9, 2014
    #8
  10. Troy

    Troy Member

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    There was no pinching, it is a brand new slide that fit in there perfectly...
    Troy, Oct 9, 2014
    #9
  11. Troy

    Troy Member

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    I had a 45 and a 180 in there before...
    Troy, Oct 9, 2014
    #10
  12. hotroadking

    hotroadking Super Moderator Staff Member

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    Not all combinations are the same, engines react differently with different exhaust.
    hotroadking, Oct 9, 2014
    #11
  13. kenfuzed

    kenfuzed Administrator Staff Member

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    Your jetting isn't so overly rich or large that I would expect to see it cause the described problem. I suspect other issues such as a stuck or incorrectly adjusted float, bad float needle valve, or leaking accelerator pump diaphragm.

    Also check that the needle jet is right side up. If upside down or missing this will make the fuel spray very uneven (gush compared to fine mist) at mid to wide open throttle.
    [​IMG][​IMG]

    Here are some common problems and fixes for CV carburetors.
    http://www.cv-performance.com/harley-cv-carburetor-tuning-issues/

    Are your spark plugs fouled?
    kenfuzed, Oct 10, 2014
    #12
  14. Troy

    Troy Member

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    Thanks ken, and yes they are...I think it may be a missing needle valve because I didn't see one the last two times that I have taken the carb a part. To think of it, I have never seen one so someone else must have lost the darn thing years and years ago. I'll pull it a part and see. Hopefully this is all it is. I put the smaller jets in yesterday and it's still rich smelling. So here's hoping that's all it is!
    Troy, Oct 10, 2014
    #13
  15. kenfuzed

    kenfuzed Administrator Staff Member

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    Ah yes, this is common and easy to overlook but is critical in properly delivering an even air/fuel spray into the carburetor's intake path. Some other brand tuner kits had the needle jet integrated as part of their emulsion tube (which can wear out) so when you replace those with either a stock Harley or CVP emulsion tube you would be missing that jet nozzle as a separate piece. We sell that needle jet or your local Harley dealership has it as p/n 27100-88.
    kenfuzed, Oct 10, 2014
    #14
  16. Troy

    Troy Member

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    I just gave in to my temptations and bought the s&s e carb and kit...I've been wanting it for the past year and just said screw it.
    Troy, Oct 10, 2014
    #15
  17. HarleysLR

    HarleysLR Active Member

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    Not to burst your bubble, that is probably to much carb for a 883.
    I have a cv carb with cv performance parts on a stroker 103. It Works flawlessly.
    HarleysLR, Oct 10, 2014
    #16
    JohnnyBiker likes this.
  18. hotroadking

    hotroadking Super Moderator Staff Member

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    id have bought the $10 needle first lol
    hotroadking, Oct 10, 2014
    #17
  19. Troy

    Troy Member

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    I'm converting it to a 1200 over the winter. It'll be a great carb...my cv is just really old and I'm sick of screwing with it..
    Troy, Oct 10, 2014
    #18

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