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  #1 (permalink)  
Old 08-05-2018, 10:37 AM
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Join Date: Aug 2010
Location: meraux, LA
Bike Year, Make, Engine: 03 AIH TX Chopper
Posts: 37
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03 AIH stumping carb

I think I've tried everything to get a severe stumble out of my 03 Texas chopper. I've check for intake leaks and have not found any. Engine is 107 SS with Daytona twin tech ignition. Bike has a bad stumble when between 2-3k rpm, 2 or 3 rd gear. My jetting I'm running now is 76 main, .031 intermediate with the air bleed drilled out to 3/64, which I just did to try and help. The bike has always had this problem. Also the little blue o ring is in place. I've got the air/fuel set at 1.25 turns. Bike idles great and will pull like a mofo when on the gas. I've tried with and without air filter. Nothing seems to help. Anyone have any ideas where to look ? Thanks
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  #2 (permalink)  
Old 08-05-2018, 04:56 PM
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Join Date: May 2010
Location: Reading, PA
Bike Year, Make, Engine: 88" ACM Rigid Bobber
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Sounds like you've been pretty thorough, be sure to check your float level. What pipes are you running and are they baffled? If you're running unbaffled and/or really short pipes you may not be able to fix your issue without baffles. Thunder Monsters work great if you want to try a baffle.
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Old 08-05-2018, 06:13 PM
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Join Date: Aug 2010
Location: meraux, LA
Bike Year, Make, Engine: 03 AIH TX Chopper
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CA, I'm running the V&H big radius with baffles. I'm leaning towards pulling the intake and putting new seals. It's about the only thing I haven't changed. Also it has some type of air turblator , I guess you would call it, which I plan on removing. Wish I could put a picture to show what I'm talking about.. it's mounted on the intake, then the carburetor isolator, then the carb.
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Old 08-10-2018, 01:10 AM
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Bike Year, Make, Engine: 2004 Ultima Chopper
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If it has always had this problem, then maybe it doesn't like the air cleaner..Cut you a piece of porous cloth and wrap it around the paper on the element and reinstall, to enrichen it up a tab ,,try several layers if you have to ...see if that makes any difference..it may give you a signal. I remember mine had a lean stumble from improper paper element..too much air..
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