[FIXED] Scooter won't stay running at idle  By  bille (Read 28,273 times)

So exactly what do you recommend he should do rexxk? Your posts ramble on about this and that, but you never give clear concise advice as to what he should do.

Alleyoop is following troubleshooting procedures, ruling out one thing at a time, and attempting to diagnose something based on the rider's input and videos. You jumping into the middle of things just confuses the situation, and without clear concise advice, does not help.

Ok THANK YOU, guess we will not worry about it and just set it up so that it bogs when you give it gas and having it idle high so when he comes to a stop and puts on the brakes the motor dies.

having it idle high?

whos idea was that?

i said, change the idle screw.  lower your idle.

you guys think that the idle rpm screw and the mixture screw have something to do with each other?

dude the idle screw is directly like connected to the gas pedal. it has nothing to do with mixing anything. dont think its an air adjuster. you have a 0. but you are supposed to crack it open. even at a 0, the pilot jet hole sucks al ittle air in. but its not enough to really keep it running. you crack it open just a tad. tahts why the throttle cable needs to be adjsuted with the idle screw turned all the way out. and give you about an 1/8 or a 1/16 th inch slack. then you turn it like a tad in. like from 0-100. like a maybe 1? id say 1/2 to most 2 or somethign 3. its just enough to make it run. thats how its worte in a carburetor manual. just enough to make it run at idle. which is barely any. like you would want to barely see a crack of light, then connect it to your bike. after, AFTER adjusting the throttle cable first.

reset the mixture screw, use the stock setting. its in the manual. but should be around 2 turns from all the way in, out. restet it and do it again. if it dies. or wont stay going. find out why. if the idles not adjustable. then hes got another problem.

lower your idle. quit dawdling. there. you guys are going round in round with circles over the same problem. if you cant just
heres simple
lower the idle screw. it should slowly, and again, slowly lower the rpms. until the bike cant run no more. if you cant do that, you have another problem.

his little idle screw is so turned in, its wayy up on idle. that idle screw, is like a secondary gas pedal think iof it like that. trying to think of a way to tell him this. ok. so if you let off the gas pedal, what stops it from dying? right/ thats the idle adjustment screw. now turn that sucker until its on 0. then turn it in, just a bit. thats what carburetor tuning books say.,

everybodys gotta learn from somewhere.

thats not even step 1. step 1 is, set the throttle at 0. using ure adjustment screw. with the throttle cable unhooked. then after its at 0. hook up the throttle cable. now look for slak when you pull back the throttle at the handlebar. like 1/8 or a 1/16 of an inch. its for safety, you NEED that. cause, if its too tight you can go around a corner and itll give it gas as you turn the handle bar, and You dont want that. ok now just follow my steps. also, its to be able to adjust the carburetor right.

2nd step. raise the idle a little, by using the screw. just a tad bit. then a little bit more. not much. alright. thats what keeps it going when you let off the gas.

3rd step. reset the mixture adjustment screw. turn the screw all the way in. then count out. 2 turns.

now start it up. and mkae a video. if the idles real low, raise it just a little. but if you crank up that, idle adjustment screw, then.. THEN itll throw your circuits on thecarb off. sorry just had to throw that big lingo in there. itll make it run like yoru giving it 10% gas pedal. instaed of 1-2%. it should be so low, that by the carburtetor book no air flow interupts and carburetes, .. the air high low pressure term, around the throttle, butterfly. or slide. the thing you turn with the idle adjustment screw.

is that too complicated? just follwo that and never raise the idle up too high. and it should be adjustable down until it quits. like slowly.


and the reason .. its not running..... is .. because its at the wrong circuit, like circuit as in 10% throttle and its mixed, as in tuned, the carburetor, the nmixture screw, its part of the adjustment in aprethesis, wrong.

I removed the belt and clutch to take them out of the picture for the idle. Next I set the mixture screw at 2 turns COUNTER. Next I backed the idle screw off completely and then tightened it just enough to push on the throttle.

It actually ran at like 900 RPMs for a short time but died. I recorded it: