Carb problems

[pennies4pennies]

After 3 years I finally drove my 1930 Briggs. Grant it I have nothing inside the car but a worn out seat. More body work needs done, but I did get a chance to drive it.
Here's my problem. I have a new Zen 1 Carb. The first 10 minutes the car drove pretty good. Then the back fire began. I adjusted the adjustment screw (with the cap) out 1 and 1/2 turns. I have to put vise grips on my choke rod inside the car to keep the choke on some. Not all the way. There is one spot that the car runs good. Can anybody tell me whats going on and how to fix it. Thanks for any help.
Frank

[Ford1931]

Have you tried turning the gas needle in and out to see how it reacts? Also could be rust in the tank slowing the gas flow. You can buy a gas screen that goes in the valve inside the tank to solve this. Also could be a bad condenser.

[fiddlybits]

Before fiddoing with the carb any more check your point gap. I think you will find it has closed up on you as the rubbing block seated.

[pennies4pennies]

I know the tank is good. I clean it and coated the inside and everything from the tank to the carb is new. Except the glass bowl and holder. New gaskets and screen are also new in the bowl. I'll check the points tomorrow.

[Mike V. Florida]

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Originally Posted by fiddlybits

Before fiddoing with the carb any more check your point gap. I think you will find it has closed up on you as the rubbing block seated.

Most fuel problems are electrical.