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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

1972 F-250 Carb problems!

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Old May 31, 2010 | 07:45 PM
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michler55
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1972 F-250 Carb problems!

My dad has a 1972 F-250 with a Carter 1 Barrel on a 300 6 Cylinder... The thing randomly throttles up when you turn the wheel to the right or when you push the brakes.... however when you turn to the left or hit a bump, it idles back down to normal... any idea why this thing is goin crazy?? The only alteration is a manual choke instead of an automatic one.

Any help or ideas would be appreciated!! Thanks
 
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Old Jun 1, 2010 | 06:02 AM
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I would trace the manual choke cable. Just a guess but it may be getting tugged by the steering, hence the change in idle.
 
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Old Jun 1, 2010 | 06:40 PM
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I just ran that by my dad and he said that the cable isnt anywhere close to the choke... thanks tho!
 
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Old Jun 3, 2010 | 09:48 AM
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sorry that was supposed to say the choke cable isn't anywhere near the carburetor!
 
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Old Jun 3, 2010 | 09:56 AM
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Originally Posted by michler55
sorry that was supposed to say the choke cable isn't anywhere near the carburetor!
The term manual choke implies it has a choke cable...which is connected to the carburetor.

On earlier trucks that came with manual chokes, the cable fit into the dash, then routed to the carb.

Usually when ppl convert to a manual choke on vehicles that did not come with one originally, the choke cable is mounted to a bracket that bolts to the bottom of the dash.
 
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Old Jun 3, 2010 | 10:00 AM
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Honestly I do not know what any of that means! My dad is just tryin to figure out why the truck revvs up on its own, and asked me to post this thread. I am not tryin to step on anyone's toes! I just write what he tells me in response to other peoples ideas :-)
 
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