52 flathead carb issue?
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52 flathead carb issue?
having an issue with my 52. when i start it, it only runs with the choke pulled, and it shakes the whole truck like its got a blown v8 with so serious horsepower. once you push the choke in it spudders and dies. i have the original 239 with original carb only changes is from 6v to 12v. it ran fine a month ago and then i had to sit it for 3 weeks while i built and proper alternator bracket. once i put that on with a longer belt this popped up. I am think the carb needs to be cleaned and possibly adjusted, and i have no idea how to work on carbs. HELP PLZ
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Joined: Nov 2014
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From: Beaverdell BC
Do you have to press/pull the throttle at all for it to run with the choke on? will it run with a bit of throttle and the choke off? Is the vacuum port hooked up/ plugged off?
Ran into this when I was starting my engine for the first time in I don't know how long. Would run, but needed a bit of throttle, if I went to idle it would sputter and die. Forgot to plug the vacuum port that comes off the intake manifold below the carb. If you have vacuum wipers, could be a cracked vacuum hose and that would have the same result. Essentially it is pulling more air into the manifold which is leaning out your mixture and causing it to die at idle.
Always good to give it a good clean after sitting for a long while. can really gum up on you. A carb rebuild is not any more difficult than anything else on these trucks. You just have to be methodical about how you take it apart, and putting it back together the same way.
Ran into this when I was starting my engine for the first time in I don't know how long. Would run, but needed a bit of throttle, if I went to idle it would sputter and die. Forgot to plug the vacuum port that comes off the intake manifold below the carb. If you have vacuum wipers, could be a cracked vacuum hose and that would have the same result. Essentially it is pulling more air into the manifold which is leaning out your mixture and causing it to die at idle.
Always good to give it a good clean after sitting for a long while. can really gum up on you. A carb rebuild is not any more difficult than anything else on these trucks. You just have to be methodical about how you take it apart, and putting it back together the same way.
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no i dont have to push the throttle with the choke pulled. yes it will run with the throttle pushed and choke off. But when i let off the throttle it dies. i am dont think the vacuum port is unhooked because it was running fine before i let it sit, and the only thing i took off was the alternaot,fan, and belts. didnt mess with anything in that area.
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