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Allis B running weird |
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Ttague39B ![]() Bronze Level ![]() Joined: 09 Aug 2025 Location: Tunkhannock PA Points: 9 |
![]() ![]() ![]() ![]() ![]() Posted: 19 hours 56 minutes ago at 12:06pm |
Hi, I have a 1939 allis chalmers b that is idling fine, but as I start driving it it wants choke to run. The ajustment screw is nit changing anything, (im running it on a zenith carb full metal needle) and the other day when I went to start it it kept stalling after moving 10 feet, but would restart fine. A few days later it idled for about 15 minutes great, then went to move it and stalled right out. Any ideas or thoughts? Thank you.
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Straanger ![]() Bronze Level ![]() ![]() Joined: 10 Dec 2019 Location: Michigan Points: 61 |
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How old is the fuel? When was the last time you cleaned the carburetor?
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Ttague39B ![]() Bronze Level ![]() Joined: 09 Aug 2025 Location: Tunkhannock PA Points: 9 |
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Fuels maybe 2 months old, non ethanol, its only been a year, maybe two.
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steve(ill) ![]() Orange Level Access ![]() ![]() Joined: 11 Sep 2009 Location: illinois Points: 87670 |
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main jet plugged......... choke on means lack of fuel..
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Like them all, but love the "B"s.
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Orange B ![]() Bronze Level ![]() Joined: 28 Mar 2020 Location: PA Points: 15 |
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hi, sounds like there is a blockage in the fuel line due to dirt either floating around in the tank , fuel line , or the screen in the fuel bowl. I have had that happen in the past on my 48 b. I would take the fuel line off at the carb see if the fuel flows freely , if not work towards the tank a section at a time till you get a free flowing line .
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Sugarmaker ![]() Orange Level ![]() ![]() Joined: 12 Jul 2013 Location: Albion PA Points: 8494 |
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39B,
As others have suggested check for good fuel flow. I just had our freshened CA do something similar. Fuel was flowing good. It was the condenser in our CA! Yep sounds strange but it had no power ran only at idle and very rough! Might be worth a thought as you do trouble shooting on your B. Looking forward to your updates. Regards, Chris and Cheryl
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D17 1958 (NFE), WD45 1954 (NFE), WD 1952 (NFE), WD 1950 (WFE), Allis F-40 forklift, Allis CA, Allis D14, Ford Jubilee, Many IH Cub Cadets, 32 Ford Dump, 65 Comet.
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