Slight Hesitation

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    Author Topic: Slight Hesitation  (Read 632 times)

    nivvy

    • Guest
    Slight Hesitation
    « on: November 04, 2007 - 10:39:11 AM »
    Takes a little bit to warm up the 499 these days and my question is when I give it a hare of gas is hesitates like the cars gonna shut off but then a little more throttle its fine...??? driving is fine but just barely into the throttle it does it like pulling out from a stop???

    Granted everything is new ony my car im leaning towards the plugs are fouling as with my new aluminum heads I have to find the right plug/gap combo???

    Champion RJ12Yc it is i am running now and gap is 55 thou...
    MSD 6AL

    Im gonna try autolite 111's next a cold plug



    thx

    Jason
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    Offline 6packCuda

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    • Eagle, NE... Member since 11/17/06
    Re: Slight Hesitation
    « Reply #1 on: November 04, 2007 - 10:45:19 AM »
    Accelerator pump arm may need adjustment or you might need to increase shooter size.
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    Dave

    nivvy

    • Guest
    Re: Slight Hesitation
    « Reply #2 on: November 04, 2007 - 10:50:18 AM »
    The carb is a BIGS performance Dominator carb brand new as well...$1100 smackers

    Primary Jet 90
    Secondary Jet 90
    Primary Shooter .035
    Secondary Shooter .035
    Idle Feeds .035
    Bleeds .045 (idle) .075 (mid) .035 (main)

    ???
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    Offline 6packCuda

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    • Posts: 1932
    • Eagle, NE... Member since 11/17/06
    Re: Slight Hesitation
    « Reply #3 on: November 04, 2007 - 10:52:13 AM »
    I would try increasing a couple sizes on the primary shooter.
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    Dave

    Offline Chryco Psycho

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    • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
    Re: Slight Hesitation
    « Reply #4 on: November 04, 2007 - 01:08:45 PM »
    check for any play in the accelerator pump arm , there should be no play , a .035 shooter is usally big enough unless the cam has a lot of overlap
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    Challenger - You`ll wish You Hadn`t

    nivvy

    • Guest
    Re: Slight Hesitation
    « Reply #5 on: November 04, 2007 - 01:53:24 PM »
    Well I found the problem and it was my lokar cable must have decided to stretch a little bit and retightned it!!! also I figured out why I was getting a little poof of a backfire was the springs lost there strength a little also and wouldnt fully return...accelerator arm was all good....  :2thumbs:
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    Offline moper

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    Re: Slight Hesitation
    « Reply #6 on: November 07, 2007 - 12:38:50 PM »
    Glad you found it. However, the aluminum heads may like a hotter plug... Not necessarilly a colder one. Especially if it's a street car with cold (under 60° outside) temps. I also never run a gap more than .040. It's easier on parts and tends to help clean up the idle quality on a street car.
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