Idle mixture screw broken.
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RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Discussion, Idle mixture screw broken. in Past Cadillac Vehicle Discussion; I have my q-jet off the engine, I tried adjusting one mixture screw, well it was seized and the head ...
  1. #1
    Fleetwood70 is offline Cadillac Owners Fanatic
    Automobile(s): 1970 Fleetwood 60-Special, 03 DHS
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    Idle mixture screw broken.

    I have my q-jet off the engine, I tried adjusting one mixture screw, well it was seized and the head just broke off of it, so there's no way to adjust it now. I set the other so the needle sticks out the same, but that's 6 turns out. Is that too rich? Will I have problems with it?


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  3. #2
    92 brougham is offline Cadillac Owners Member
    Automobile(s): 92 brougham
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    Re: Idle mixture screw broken.

    Well I would drill out the screw and get another one . This way you can do the right adjustments

  4. #3
    Fleetwood70 is offline Cadillac Owners Fanatic
    Automobile(s): 1970 Fleetwood 60-Special, 03 DHS
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    Thread Starter

    Re: Idle mixture screw broken.

    Don't know how to drill it out, but I bought another throttle plate/body for ten bucks, works good now.

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  6. #4
    92 brougham is offline Cadillac Owners Member
    Automobile(s): 92 brougham
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    Re: Idle mixture screw broken.

    Cool...everything worked out

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