Would an improperly adjusted float cause starting problems when warm/hot???

Discussion in 'The Venerable Q-Jet' started by Jeff T, Sep 4, 2010.

  1. Jeff T

    Jeff T Just a 350... A Buick 350

    Here's what happenend... Had my carb rebuilt. In my eagerness to install and get rolling I stuffed the carb post through the air horn and into the float. :spank:

    Ordered a new gasket and float and when I went to reassemble I lost the clip for the needle. Went to my local garage and he gave me one and it wasn't exactly the same.

    Cold it starts fine, warm it cranks and cranks. Thanks!
     
  2. Steve Craig

    Steve Craig Gold Level Contributor

    I have a complete 7041544 '71 350-4V in pieces.Already boxed but in pieces.
    You can have it for $25.00 + shipping.
    I can also send you pieces, let me know.
     
  3. william.ali.kay

    william.ali.kay Needs more cowbell!

    I had the same sympoms before from a stuck choke.:Do No:
     
  4. Jeff T

    Jeff T Just a 350... A Buick 350

    Stuck open/closed???
     
  5. Jeff T

    Jeff T Just a 350... A Buick 350

    Thanks Steve but I'll sort mine out!
     
  6. doc

    doc Well-Known Member

    a carbureated engine, if set up right, will start up without you touching anything but the ign switch.... after it is warmed up...... cold, it should start by patting the accelerator pedal a couple of times , even if it has no choke at all... mine does all these things.....
     
  7. Cliff R

    Cliff R Well-Known Member

    Cold it starts fine, warm it cranks and cranks.

    Will it eventually start?

    Do you have to hold the accl to the floor to get it to start, like it's flooded?

    The float level has nothing to do with a hot restart, as long as the fuel level in the bowl isn't so high it's flooding over, and in that case it wouldn't work well once started up anyhow.

    Bottom plugs could be leaking some fuel into the intake making it difficult to start.

    The little clip on the needle isn't really needed, and would have nothing to do with hot restarts anyhow. It's there to pull the needle out of the seat so it doesn't stick when the carb dries up when sitting for long periods of time......Cliff
     
  8. RAbarrett

    RAbarrett Well-Known Member

    Something else to consider here is the situation called "hot soak." It is caused by the fuel, being heated by the underhood components, and vaporized in the air cleaner. This will soak the air cleaner, the vapor cannister, if used, and will cause a super rich condition at hot start up. What will aggravate this is the fuel coming from the tank is cooler, and when it hits the hot components, it also vaporizes, aggravating an already difficult situation.
    Try this: next time the engine is set to do this, pull the air cleaner cover, and pump the throttle once, looking for a pump shot. If you have a pump shot, the bowl has fuel in it. Also notice whether the underhood area reeks of fuel indicating vaporized gas. That will also allow you to note the position of the choke. If you suspect that the engine is flooded, crank the engine until it starts with your foot on the floor with the throttle. The extra air will help the engine start. I have seen my share of the crap we call gasoline cause this, and sometimes, changing brands helps.
    Also, replace the float with the correct one, I suspect Cliff can help here. Get a good clip for the needle, and carefully set the float level. Let's start there.
     
  9. Jeff T

    Jeff T Just a 350... A Buick 350

    Opened the carb up again. Pulled out the needle clip and reset the float.

    All is now good! Thanks.
     

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