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Post by rexxk on Jun 24, 2014 14:09:01 GMT -5
yea watch out for springs flying out of your coil wire too when you do that.
hm hmmm. what i said, tells you nothing.
no a fuel mix screw is located on 2-strokes. most people see air screws. most people, have 4 -strokes. thtas what ive heard. but you can use either carb on either bike. sometimes parts in teh cvarbs need changed, but we dont need to get into all that.
and i guess,he'll find out if hes got an air or fuel screw when if he finds hes out of tune on the pilot jet, and then swaps it and it does, worse or better.
so there thats how you tell. you can tell by which side the screw is on of the venturi. since i dont have his carb, I dont know. I just heard that. so, your adjusting it. But not richenning or leaning like YOU hear. but your ADJUSTING, which is the important part. who cares what someone says their not there. and THANKS for makign it up alley.
and MY suggestion is his tachs reading 1 PULSE as the 1.0 would I think indicate, on his tachometer settings. A 0.5 I would THINK would be, 1 PULSE per 2 revolutions. dividing 1/2. and thats the onlyu way i can figure it out. I think his idle is low. And i also think maybe he's TUNED WRONG. the mixture screw is tuned wrong. since that bike is usually stock. at like 1 1/2 turns of the mixture screw out. he's running out of tune. and its killing his bike, and the low idle, doesnt help any either. so take the 2500 he seen, 2/1, and you get aroudn 1250 rpms. No wonder its killing. And the mixture screw not tuned well either? it will die. Nothings wrong. Just adjust the mixture screw. quit getting into everything else.
its running now do the things, To start it.
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Post by bille on Jun 24, 2014 14:43:37 GMT -5
I tried setting the tach to 0.5 and it was registering like 6000rpm before the wheel was really engaged.
I also ran out and picked up a new spark plug, just installed it and tried to start from a low idle screw setting. I turned the idle up just a hair just time until the bike started. When it finally started it was just above 3000 rpm. Right now it's running on the stand at 3860 rpm, waiting to see if it warms up or stalls.
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Post by bille on Jun 24, 2014 14:58:04 GMT -5
stalled
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Post by bille on Jun 24, 2014 15:15:31 GMT -5
Here is my latest attempt at just getting it to run under 3000 rpm:
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Post by rexxk on Jun 24, 2014 15:30:57 GMT -5
that popping, backfire? try adjusting the mixture screw for highest idle rpms. do it. nothing left to mess with. try 1 1/2 or 1 13/4 turns out on your mixture screw. start from there. but just dont adjust the mixture screw, and listen at a low idle rpm. you go by feel, when your sitting on it and riding it.
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Post by jerseyboy on Jun 24, 2014 15:31:48 GMT -5
Is it ridable when idling over 3k,,does the motor rev up and have full power??
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Post by rexxk on Jun 24, 2014 15:33:50 GMT -5
your starting it all day. over and over. forget what the tach tells you. listen to it. hear the revolutions per minute. try adjusting your mixture screw. your not doing nothing running it. why are you not riding it? why are you posting here, and, not riding it?
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Post by alleyoop on Jun 24, 2014 16:02:59 GMT -5
Bille,
Is that 150cc 157QMJ motor? Look on the left side of the case by the sidestand.
I have a great deal for you.
Alleyoop
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Post by jerseyboy on Jun 24, 2014 19:53:51 GMT -5
your starting it all day. over and over. forget what the tach tells you. listen to it. hear the revolutions per minute. try adjusting your mixture screw. your not doing nothing running it. why are you not riding it? why are you posting here, and, not riding it? Maybe he is making a generator out of it..lol |
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Post by bille on Jun 24, 2014 20:42:33 GMT -5
I haven't tried riding it because it keeps stalling and I don't want to have to push it home like a chump in front of my neighbors.
Also, yes, it is a 150cc 157QMJ motor
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Post by alleyoop on Jun 24, 2014 21:15:31 GMT -5
That is the same motor I have, Check your messages.
Alleyoop
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Post by bille on Jun 24, 2014 21:31:04 GMT -5
So just for fun, I figured the fuel/air mixture screw and the idle screw only have so many possible combinations.... So I started with mixture screw at just 1 turn and the idle screw completely off. I would try to start it, when it didn't start I would turn the idle screw slightly and try again. After so many turns of the idle screw I would reset it back to completely off and turn the mixture screw 1/4 turn. Then do the whole thing over again  I did it for: 1 turn 1.25 turn 1.50 turn 1.75 turn 2 turns and I couldn't even get the stupid thing to start! Anyone want to buy a slightly used scooter? It has lots of new parts and runs....well it runs. |
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Post by rexxk on Jun 24, 2014 22:18:39 GMT -5
the idle screw doesnt do nothing what your thinking. it is the rpm screw. has nothing to do with jetting idle. it is the rpm setter. it doesnt control anything. get the damn thing started. when it starts, make sure its idlign kinda high. not so fast like the rear wheel spinning crazy. then, after that, set your mixture screw for the highest idle. as your setting it, if it starts to race then adjust it.
we, have no idea what yoru idle screw setting is supposed to be set at. or what its going to be sat at. I dont know. i dont have a 150cc 4-stroke. just get it going. once its going, i beeen teelllling you the steps to adjust the carburetor to get it running. get it started up. use the idle rpm screw, its not anything to do with mixture. its only to set the rpms. at idle. since it can only push up the slide, or your butterfly, a small percentage of the way. like 1/10 of the full throttle. if even that. i dont know soemthign like that. once its started get it running at a fast idle rpm. using the idle rpm screw. jsut call it an rpm screw. then adjust mixture. if it starts racign as your adjusting, like it would run away, lower the rpms with the rpm screw. until its just a fast idle. sorta like when you first start your scooter. kinda how it was running in the last set of 5 videos orsomethign that you posted. earlier today. once youve got the mixture screw set. see if it quits on you then. if it dies on its own, well then . but..
once the auto choke turns itself off, youll need to readjust it. but what you should do is get it warmed up. let it run. if it startts to die, use the idle RPM screw. that screw isnt any part of the mixture, at all whatsoever. its just an RPM screw. if you know how to tune a carb you'll know what its doing. just keep it running if you have to up that rpm screw if it starts dying. once its finally warmed up, then adjust that mixture screw. thats why .. you canhave such a high amount of turns in on your rpm screw, it not work, that it dies once warmed up. the mixture might be good at a certain rpm, but if somethings off, then say the chokes on,when it shuts off, thigns go to crap. so you get it running, its running fine, then the choke turns off and it dies. well, maybe the mixture was fine. the choke turned on, then it turned off. it turns off, the mixture changes, the bike dies.
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Post by bille on Jun 25, 2014 0:36:05 GMT -5
This thread is back to "waiting on parts" |
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Post by alleyoop on Jun 25, 2014 0:39:53 GMT -5
All packaged up even threw in a VISU fuel filter for you  Alleyoop |
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..BAD TO THE BONE..