Have a 2003 fat boy, runs fine with the choke out but coughs and backfires on acceleration with the choke off no matter the temperature of the engine. Any help would be greatly appreciated. @
Duplicate question already answered
SOURCE: 2003 YZ250 engine coughs and sputters at high RPM
fuel carburetor problem! it causes most of the spluttering problems i have encountered with mine so far!
it could have blockage and insufficient gas enters on it during high revs!
SOURCE: 5.3 chevy hesitates when cold runs fine after warming up
I have same problem, Chevy told me it was probably a seal affecting fuel air ratio and when warm seal expanded to stop air leak. I forget which seal but they also said to check plastic case around seal because it will warp and may also need to be replaced. It was located near top center of engine. Please let me know if you figure it out.
SOURCE: bike idles on choke , engine dies on acceleration drz 400 e 2003
try using that redex stuff get back to me
SOURCE: Backfire - Husqvarna YTH20K46
I find my 2148 runs much happier on the medium grade shell than on the cheaper gas. I did have a nasty POW, which resulted in bent pushrods, or perhaps the bent pushrods caused the POW. After replacing the pushrods, and adjusting same, the backfiring stopped altogether. knock on wood. The 21 is a B&S engine which has a propensity to the bent pushrods. Fortunately for me, my neighbor is a wiz at those fine adjustments.
SOURCE: 2003 Suzuki Volusia 1,600 miles. Runs on choke
do you have a k and n air filter,or the like?
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