carb troubles
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Tourer
Joined: Sep 2007
Posts: 400
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From: se ohio
carb troubles
hello i have a late 84 ironhead \\; that has been acting funny latley the carb ( just off idle) will spit back thru carb it wont do it at mid range or top end, it has always did it cold but now it does it all of the time,i just put new intake bands on it,also has a bad stumble at about the same rpm once past the stumble it runs great, no idea what jets are in it, should i start there? ps. the motor is all stock including the carb, the factory service manual does not say how to adjust the carb, \\; thanks
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Tourer
Joined: Sep 2007
Posts: 400
Likes: 1
From: se ohio
RE: carb troubles
i just put new bands on checked for leaks with starting fluid all is good there not sure how to set carb, the factory service manual i have does not say how adjust the carb all it says is that it is factory set for emmision controls, ( the idle richness cap has already been removed) can anyone walk me thru the correct way to set the carb? \\; \\; thanks again!
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Joined: Apr 2006
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RE: carb troubles
ORIGINAL: GA Ironhead
CV carb?
>\\;\\\\\\;...always did it cold but now it does it all of the time...
Did the problem start before or after the intake work?
CV carb?
>\\;\\\\\\;...always did it cold but now it does it all of the time...
Did the problem start before or after the intake work?
If it's a non-cv butterfly carb, the idle mixture screw should be lightly seated, then backed out one and a half turns. This is just a starting point. After the engine is fully warmed up, adjust in very small turns untill it idles smooth. Then the curb idle can be set either with the tach or by ear.
Like GA said, it sounds very much like an intake leak that causes the sneeze you are getting.
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Tourer
Joined: Sep 2007
Posts: 400
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From: se ohio
RE: carb troubles
it is a non cv carb,i will go over intake bands again in the am, it has allways done it cold but seemed to get worse after i replaced the bands, i had messed with the idle mixture just was not sure where to start with getting it close \\;, thanks again!
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Tourer
Joined: Apr 2006
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RE: carb troubles
I've learned that if you remove the carb from the intake before you install it, it will seal much better. Then install the carb after the intake has been seated as close to the heads as you can get it.
Another help for keeping the band seals tight is to have a carb support bracket to keep the whole thing from sagging under the weight of the carb and air cleaner.
Another help for keeping the band seals tight is to have a carb support bracket to keep the whole thing from sagging under the weight of the carb and air cleaner.
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Thread Starter
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Tourer
Joined: Sep 2007
Posts: 400
Likes: 1
From: se ohio
RE: carb troubles
thanks for your help guys, i checked for intake leaks again still good there,set idle mixture at 2 turns out, no more \\;spitting out of carb,runs good \\; \\; thanks again
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