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new carb - dieseling

Discussion in '1969-1972 K5 Blazer | Truck | Suburban' started by K5Buckeye, Sep 10, 2001.

  1. K5Buckeye

    K5Buckeye Registered Member

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    Replaced the old q-jet w/a brand new edelbrock q-jet, 1901. It's dieseling. Why? It didn't do it b/4. Please advise.
    Thanks.

    1972 K5
    1991 Jimmy
     
  2. arq

    arq 1/2 ton status

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    you sure you hooked up your vacuum advance in the correct place???

    check that first, i am sure others will coment. I have a Q-jet 1901 aswell and i had no problems. hate for it to get a bad rap...

    ARQ.

    1-72 4x4 CST Blazer
    2-71 4x4 CST Blazer
     
  3. ErikH

    ErikH 1/2 ton status

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    If you disconnected the plug wires, make sure they're back in the same order. Dieseling is often a timing issue. Similarly, if you replaced the intake manifold, make sure the replaced distributor isn't off by a couple teeth.
    Erik
     
  4. K5Buckeye

    K5Buckeye Registered Member

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    Thanks for the tips. I'm pretty sure I did all that stuff. I'll double check though.


    1972 K5
    1991 Jimmy
     
  5. Klef72K5

    Klef72K5 1/2 ton status

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    did you turn your distributor? Sounds like you have it retarded.


    <a target="_blank" href=http://wsphotofews.excite.com/031/rw/Jo/og/t488200.jpg>http://wsphotofews.excite.com/031/rw/Jo/og/t488200.jpg</a>
     
  6. Steve_Chin

    Steve_Chin 1/2 ton status

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    Depending on the camming you're running, you might need to alter the jetting or power piston setting. No out of the box carburetor is going to work perfectly on every engine combination.
     

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