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Difficulty starting 32 Buick Model 86.


32BuickVicky
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Recently redid the entire fuel system including gas tank renew. New fuel pump mounted near tank, new regulator and filter. Carb rebuilt recently but leaking fuel from it when pump turned on. New plugs, new plug wires, new distributor rotor button, new coil and condenser.  Getting fire at the right time. Doesn't seem fuel is getting to the plugs. We are in East TN and at our wit's end. Anyone have advice or know of someone in our local area that could help?

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If you are usinmg an electric pump, even with he regulator, pressure may be to high for the carb.

The best way to start a car with updrqaft carb is to use a lot of throttle and full choke until it fires and then back off on both. You have to choke the heck out of it.

You obviously have fuel to the carb.

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Have you adjusted the idle screw in a bit so the idle rises high enough to maintain rpms?

To cheat, if you have it installed and functioning, adjust the hand throttle on the steering column up a bit to maintain the idle until you can determine whether the idle adjustment screw is engaged enough to hold a good idle.

 

Let me know if you need photos of these items.

 

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What idle rpm are you set at?  

 

My guess would be too much fuel pressure is flooding the carb and it takes a lot of air volume to get it somewhat stable.

 

Disconnect the  fuel line at the carb and connect a good quality pressure gauge and power the electric pump and get a reading.  anything over 2 psi can be a problem.

 

What color is the exhaust pipe ?  Pull a plug and check it's color.

 

Get in touch with Dean Tryon.  He lives in North Carolina.  He is an expert on  early Buick fuel systems.

 

Bob Engle

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Adjusted the idle screw but made no difference. We have a quality fuel pressure guage on it and its set at 1psi. 

 

I think we are going to check the values next. Disconnecting 6 of the spark wires individually makes an obvious difference in idle....2 of them (4 and 7) seems to make no difference. 

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