Carb. back fires
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Stage II
Joined: Jul 2005
Posts: 2
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Carb. back fires
I have a 96 Wideglide that will back fire on re-start after it's been sitting for less than an hour. It'll pop once and then start and will do it with, or without the chock on. Any suggestions would be appreciated.
Road Warrior
Joined: Jan 2007
Posts: 1,276
Likes: 8
From: Minneapolis Area, MN
RE: Carb. back fires
My 98 was the same way. It would also pop sometimes when doing a roll-stop right when I'd try to accellerate away from the stop. It's rather dangerous.
I tried rejetting. I did all the CV mods. I rebuilt the entire carb. I checked, but didn't locate any vacuum leaks.
I still haven't found the problem, but I'm thinking it'll be gone by the next time I start my bike. I'm in the process of upgrading almost everything that feeds the engine or lets it breathe. I sure hope that ends up fixing it.
Sorry...no direct advise, but search around for the "Harley lean pop" or some combination along those lines.
I tried rejetting. I did all the CV mods. I rebuilt the entire carb. I checked, but didn't locate any vacuum leaks.
I still haven't found the problem, but I'm thinking it'll be gone by the next time I start my bike. I'm in the process of upgrading almost everything that feeds the engine or lets it breathe. I sure hope that ends up fixing it.
Sorry...no direct advise, but search around for the "Harley lean pop" or some combination along those lines.
Intermediate
Joined: Mar 2007
Posts: 33
Likes: 1
From: new hampshire
RE: Carb. back fires
I had the same problem w/ my 97 big back fire (through exh,) on restart. found last owner striped the idle mixture screw when it was all the way in. I TRYED EVERYTHING!! even w/ the carb off, it was junk,, so i got one on e-bay(yes takeing a chance),,swaped my rejet kit, and a few other mods, now its fine,, it also doesnt pop when you decell then snap the gas to down shift,, hope this helps,, dave[sm=gobble.gif]
Tourer
Joined: Jul 2005
Posts: 373
Likes: 0
From:
RE: Carb. back fires
That back fire problem lies in the idle mixture screw... too leanwill make it pop through the carb. If the mix is too rich it will run good, start easy, foul plugs amazingly fast and get horrible gas mileage. Adjust the mixture screw to a little better than lean and you are tuned.... should have no more carb coughs.
Swede
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