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Stage 1 carb kit/twin cam 88 help?

Discussion in 'CVP Stage 1 Tuners Kit' started by beanhedd, Jul 8, 2010.

  1. beanhedd

    beanhedd New Member

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    Just installed the stage 1 carb kit. Installed the #48/#195 combo as per the instructions. I was meticulous and am sure I installed all correctly. I can get it to idle, but any touch of the throttle and it dies. Can't get it to run past idle... Any suggestions? Was running fine with the stock setup!
    beanhedd, Jul 8, 2010
    #1
  3. HarleysLR

    HarleysLR Active Member

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    what jets were stock in it? did you get the Accelerator pump rod back in place correctly?
    HarleysLR, Jul 8, 2010
    #2
  4. chucktx

    chucktx Moderator Staff Member

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    be sure you havent pinched/folded the rubber band between the carb. and manifold. be sure ya dont have it on backwards...it will go both ways.........
    chucktx, Jul 8, 2010
    #3
  5. beanhedd

    beanhedd New Member

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    Thanks, it was installed properly. Noticed the slide is not opening. That's the problem. All vacuum lines are connected and sucking just fine. Bike runs great when I hold the slide open with my finger. What could cause the slide from not opening? Is the new spring too stiff? I did not opt to do the optional drilling modification!
    beanhedd, Jul 9, 2010
    #4
  6. beanhedd

    beanhedd New Member

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    thanks for the reply, It had the #46/#190 stock setup. The problem is the slide is not opening. All vac lines are hooked up fine and sucking. When I manually open the slide it runs great. What could cause the slide from not opening? Is the new spring too stiff? I did not do the optional drilling mod.
    beanhedd, Jul 9, 2010
    #5
  7. FLHTbiker

    FLHTbiker Moderator Staff Member

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    Do the drilling and check to be sure the diaphragm didn't get pinched/cut when reinstalling.
    FLHTbiker, Jul 9, 2010
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  8. HarleysLR

    HarleysLR Active Member

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    What FLHT has said check the diaphragm. if it is the stock spring it is not to stiff. DO NOT drill the slide. Check the air adjustment screw. Basically just recheck all that you have done. The difference in the size of jet you had and what you have now are not that much. I run a 145 & 190 but I live at 6,000 ft. and I know I'm a little rich on top end. But I like it that way.
    HarleysLR, Jul 9, 2010
    #7
  9. chucktx

    chucktx Moderator Staff Member

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    i agree, do not drill the slide. where did the spring come from.....whos kit are you using???
    chucktx, Jul 9, 2010
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  10. FLHTbiker

    FLHTbiker Moderator Staff Member

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    Interesting you guys said don't drill the slide, why. I used Kens kit and followed the directions and did do the drilling (by hand) and my 01 Springer runs excellent and the last time I rode it a long distance I got 50 MPG.
    FLHTbiker, Jul 9, 2010
    #9
  11. chucktx

    chucktx Moderator Staff Member

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    the drill bit in kens kit only cleans the original hole, not enlarge it. i am not sure whos kit he is using. he mentioned the spring maybe being to strong.....a tip he may not be using kens kit. that is why i said dont drill the hole, there is a lot of chatter about drilling the hole oversize, and all that does is cause flutter and other problems with the carb.
    chucktx, Jul 9, 2010
    #10
  12. FLHTbiker

    FLHTbiker Moderator Staff Member

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    Guess I'm thinking of Kens kit as that was what I did clean out the hole. Your right drilling it out oversize would cause those conditions. But why would anyone want to drill it out larger than the needle size causing slop in it?
    FLHTbiker, Jul 9, 2010
    #11
  13. kenfuzed

    kenfuzed Administrator Staff Member

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    Correct, the drill bit is small enough to only clean up the vacuum port hole on the slide. This is different than the hole where the needle protrudes from which is centered, as opposed to the vac port hole being offset just behind the needle hole.

    Just as an update for those following along, I have been helping him out by email as well. So far he has mentioned the bike is fitted with a Hypercharger which raises my suspicions that a vacuum leak with the hose leading to the HC flaps could be at fault. Purely speculating at this point but hopefully after enough diagnosis we'll find the culprit.
    kenfuzed, Jul 9, 2010
    #12
  14. FLHTbiker

    FLHTbiker Moderator Staff Member

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    Glad you were helping him out Ken, hope he gets it figured out. Drilling it out is the wrong term to use. But cleaning it out with the drill bit is a better way to say it. A vacuum leak sure would cause it but wouldn't a cut diaphragm also cause it.
    FLHTbiker, Jul 10, 2010
    #13
  15. kenfuzed

    kenfuzed Administrator Staff Member

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    Exactly, a damaged diaphragm or anything that interrupts the vacuum to/from the slide will cause the slide not to open properly, which is a condition he has described to me.
    kenfuzed, Jul 10, 2010
    #14
  16. chucktx

    chucktx Moderator Staff Member

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    thanks ken!
    chucktx, Jul 10, 2010
    #15

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