help on 350x carb?

[350xrider911]

yeah but the carb was off an 86 only 3 mm bigger?

[Erics350x]

Different jetting

[350xrider911]

i dont get it was it running rich or lean to back fireim afriad it might run to rich and mess the rings up.would running it lean make the rings stick the the piston also?

[scrawny]

if it is rich it will flubber and blubber with black smoke coming out, if its lean, it will back fire upon hard acceleration. its a 4 stroke, it can run a little lean if you are just making jetting runs. extended high rpms while running lean will shorten engine life for sure not having anything to do with stuck rings...

[350xrider911]

i thank i got it figured out when i turn the gas off it idles hight the does smoke as bad but the ill give gas the it act fine tell it run out in the bowl i thank on the 34mm car i need to up jet my main that way it dont back fire and turn the air mixture in as i turn it get rich or other way aroung?

[NOS_350X]

Buy a new plug, Run the bike for about 100 yards at the rpm range/jet you want to check pull the plug you want a skin/tan color (i go for it a bit darker brown to be on the safe side) If there is no coloring then your way lean. Here is another tip always start rich and go down. Rather run rich than blow an engien because of a leand carb while trying to jet in. So if your at a 45 now go with a 52 or 55 pilot and go down. Same with the main jets. Also keep some standards, you keep chainging carbs and pipes, leave it at soemthing and get the jetting figured out, write it down. Then swap parts then it should only be minor changes.

[350xrider911]

i put a new one in but havent had the chance torun it yet but the old one is all black.

[350xrider911]

i thank i got it but, still smokes alittle but the spark plug was black knows it brownish , i put the supertrapp on and seem like it had more mid power but i took all the disc out the stock pipe which is modifide alot seem like got more all around power.