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Carb ISSUE

Old Oct 31, 2010 | 09:11 AM
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Carb ISSUE

Ok, so I start my 86 ripper pickup and it wont idle at all. It runs really rough and shoots out a mix of black and white gas smelling exhaust. Its stinky stuff. I think the choke isn't functioning properly? ANyone have any ideas?
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Old Oct 31, 2010 | 09:23 AM
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have you had the air cleaner off to confirm the choke is closed when it shouldn't be? I would start there. whats confusing is you say black and white exhaust. I do not see how it can be both, it's usually either or. unless of corse maybe it's 20 degrees outside. But I have never seen it.

Last edited by xxxtreme22r; Oct 31, 2010 at 09:24 AM.
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Old Oct 31, 2010 | 01:39 PM
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Yes, I have checked the choke. It seems to be working ok. its open 1/8 of the way when I manually keep it running. What else should I check for? The exhaust is black and smells heavily of fuel. Not a dark black just some. The truck will drive and run down the road but it sputters and chugs.
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Old Oct 31, 2010 | 01:44 PM
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what do you mean by manually keep it running? is the choke opening when the engine is warm or are you trying to drive it before it has a chance to warm up?
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Old Oct 31, 2010 | 09:02 PM
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Ok, I pump the gas twice. Turn the key. The truck is hesistant to fire up, but it will. Runs on its own for about 5 second tops. Other than that I must manually push on the gas with my foot, or blip the throttle from the engine bay so I can try to look whats going on also. The truck runs, but sputters and sounds like ˟˟˟˟. There is a heavy sent of unburnt fuel in the exhaust and plumes of smoke from the manifold and the out pipe. The smoke is sometimes dark colored. Usually smells more than anything and just looks like a haze cloud. I drove the truck around for a while and it will run ok with the throttle 3/4 way to all the way. Wont idle at all. When I turn the 22r off, sometimes the carb surges and splurges some unspent fuel and fumes back through both barrels.
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Old Nov 1, 2010 | 05:54 AM
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It might be a float issue or the needle valve may not be seating correctly.
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Old Nov 1, 2010 | 06:02 AM
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yup sounds like the float is sticking. what is the level in the sight glass on the front of the carb.
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Old Nov 1, 2010 | 10:06 AM
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Alright, I'm back at college now so the truck isnt with me. How can I check the float? Take it out and see if it floats?
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Old Nov 1, 2010 | 10:58 AM
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there is a sight glass on the front of the carb, the fuel level should be in the middle when at idle.

P.S> were you doing anything prior to this happening?

Last edited by xxxtreme22r; Nov 1, 2010 at 10:59 AM.
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Old Nov 1, 2010 | 12:07 PM
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I believe the float is checked by weight , if it is to heavy it is leaking gas to the inside of it.what you are checking threw the site glass is the float level.
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Old Nov 1, 2010 | 12:10 PM
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yeah but why check the float's weight if the site glass level is right. if the float is too heavy then the level will be high.
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Old Nov 1, 2010 | 01:18 PM
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You are right about the fuel level ,I was just answering the question on how to check for a bad float. Seeing if it floats won't tell him much on the floats condition.

Last edited by swampfox; Nov 1, 2010 at 01:20 PM.
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Old Nov 1, 2010 | 05:21 PM
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Prior to this issue happening, I was getting on it in a cornfield. Then a few hops and bounces later the truck acted up. I will check the float level as soon as I can. Say if its heavy? The float will be high up on the reading? If that's the case then what? Where do I look for this reading?
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