popping while accelerating

[Guest]

82 1100G 34 cv just rebuilt . now it popping or backfires while accelerating ,but after RPMs get up some runs fine so far , any thoughts ??

[chef1366]

Lean on the needle circuit.

[Spyderman]

might be lean on the pilot as well as the needle depending on the throttle position

[tbirdhd]

throttle positions as soon as you start to raise the RPMs, after that it runs hard,

stock motor ,with pods, 4 in to 1 exhaust,

[stetracer]

Put a bigger pilot jet in there. What size is in there now? Raise the needle if it hesitates on a roll on like when your going 55 mph and try to pass someone.

[mrbill5491]

Ha, I misread the title to this post, thought it said, pooping while accelerating. Was saying to myself, dang that is one hell'va hard accelerating bike to make one poop! LMAO.

[tbirdhd]

it poops as soon as you try to come off idle , jets are 127.5, are jet is 170, pilot jet are stock ill have to check and see what there are .

[Spyderman]

richen up the pilot mixture screws about a 1/4 turn and see if that is better chances are you can get it to go away with a little tuning and if really needed you may need to increase the pilot jets 1 size and then tune

[tbirdhd]

ok now worse then ever , I put a DJ kit in as it saids to and now will hard start ,if starts will only run with chock pulled out ,

[chef1366]

Starting and a DJ kit have nothing to do with each other. Something else is wrong.

[tbirdhd]

ok still dont run, after i installed the DJ kit, before the kit it started right up ,idled fine , but popped when you went to raise the rpms ,after that run good , now bike will not start,even with chock pulled out , since the install i have takeing the carb apart 2 more times looking and checking ,

bike is a 82-1100g , 34cv carbs, main jets ,DJ138s , pilots are 40s, air jets .DJ160, air/fuel screw is 2 turns out ,
can any one tell me what i did wrong or right lol .,?? and what i should do to get bike running , ask me if you need to know something i have not told!!

Bill B

[tbirdhd]

Know one has any thoughts or input on this ????????????

[mrbill5491]

ok still dont run, after i installed the DJ kit, before the kit it started right up ,idled fine , but popped when you went to raise the rpms ,after that run good , now bike will not start,even with chock pulled out , since the install i have takeing the carb apart 2 more times looking and checking ,

bike is a 82-1100g , 34cv carbs, main jets ,DJ138s , pilots are 40s, air jets .DJ160, air/fuel screw is 2 turns out ,
can any one tell me what i did wrong or right lol .,?? and what i should do to get bike running , ask me if you need to know something i have not told!!

Bill B

Have you checked your rubber carb boots and orings for air leaks?

[chef1366]

With the 138 DJ main you installed a sixteen valve kit in to an eight valve motor.
Get the correct DJ kit and it probably will run right.
Sixteen valve DJ kit 3133
Eight valve kit 3103
Bill

[gmansyz]

You probably do NOT need a jet kit if the rest is all stock. Usually, just the next size larger pilot, adjust fuel screw from 2-4 turns out. And maybe, raise the stock needle half a millimeter. Sometimes raising the float level a little helps. And are the pilot jet plugs still in or lost?
G