Whats Wrong With My Carb?

Discussion in 'Classic Mustang Specific Tech' started by robert912005, Aug 11, 2013.


  1. robert912005

    robert912005 Member

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    I have a 65 coupe with a 302. I have a 1850 Holley carb on it and when i try to start it gas comes up and out of the vent tube. i have attached a pic to show where exactly it is coming from.

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    #1
  2. horseballz

    horseballz Member

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    Sounds like your float may be stuck open.
    HTH,
    Gene
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  3. robert912005

    robert912005 Member

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    Thanks. It has been sitting for awhile. Is there a better carb to buy that will withstand prolonged periods of sitting?
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  4. v8only

    v8only Active Member

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    carbs dont like sitting for ling periods of time. just take it apart clean it and re gasket it

    Sent from my SPH-L710 using Tapatalk 2
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  5. 2+2GT

    2+2GT Well-Known Member

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    Any carb may develop problems after prolonged storage, although I must say my Autolite 4100 sat for about 5 years, and fired up perfectly when I pulled it out of storage.

    Without a doubt, the Holley is the worst carb in this regard. Some of the fuel and vacuum passages are formed by the bowl gaskets, and all sorts of unfortunate things can happen when these gaskets dry out.
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  6. horseballz

    horseballz Member

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    The best you can do is store the car with a tank full of fresh gas mixed with the proper ratio of StaBil or similar product and if at all possible start/run the engine up to full operating temperature at least once every month or so. Besides cycling older fuel out of the carb for fresher fuel, you will also help to circulate the rest of the fluids, etc. 15-30 minutes of running should also keep the battery fairly happy.
    My $.02,
    Gene
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  7. robert912005

    robert912005 Member

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    well i ended up pulling the float adjustment out and put it back in and it fired right up and didnt have any problems besides running rich.... i try to run it every month but before i got my house i was unable to...
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  8. horseballz

    horseballz Member

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    robert912005,
    It is good that you found/cured your issue and VERY COOL that you actually posted back with your results! Many folks get good advice and then never let us know the outcome. I'm guilty of it too!:oops:
    Thanx,
    Gene
    #8
  9. crane550

    crane550 Member

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    Yea thanks for the followup. I just had the same problem on my motorcycle. The ethanol in the fuel these days is terrible for old carbs. Thank you, Washington.
    #9

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