running rich smaller main jet?

[badass350x]

Put it back the way it was with the stock pipe and jetting and see what it does!

[Scootertrash]

Are you referencing the manual so you are sure of what you are doing? Not trying to be a jerk, It shouldn't be this difficult, I just want to make sure you are adjusting the proper screws at the proper time..

Sounds like your idle circuit is still screwed up. I wouldn't think that the pipe would cause you to need a different pilot jet.

Are you sure your idle speed screw/throttle stop screw on the side of the carb is actually lifting the slide when you adjust it? Are you flicking the throttle as you adjust the screw to be sure it's not binding the slide? (not the pilot screw that you need to come up from underneath the carb to get at)

Otherwise you may have to do what badass350X said and put it back the way it was, make sure it runs good that way and start from there.

[Dirtcrasher]

Leave the friggen needle alone! Get the main jet correct then fine tune the midrange with the clip position if needed (rarely necessary for the average guy), you may have a slight midrange stumble.

The main jet is most important, it all trickles down from there......

MAKE ONE JETTING CHANGE AT A TIME!!

[curtis slawson]

yes i have been looking at the manual. The air screw dose work but has no afect on no choke but when you put on choke or half choke you can adjust the idle and work's good& iv tryed hittting the throttle still nothing but i can keep the bike running if i give it gas then shut the choke off and drive it but it very jerky and sputters on give it gas & stalls out if i let go.
The bike was working perfect befor new pipe it would idle perfect on no choke i could catwalk it in 4th gear no problem so i know it was running good befor.

Are you referencing the manual so you are sure of what you are doing? Not trying to be a jerk, It shouldn't be this difficult, I just want to make sure you are adjusting the proper screws at the proper time..

Sounds like your idle circuit is still screwed up. I wouldn't think that the pipe would cause you to need a different pilot jet.

Are you sure your idle speed screw/throttle stop screw on the side of the carb is actually lifting the slide when you adjust it? Are you flicking the throttle as you adjust the screw to be sure it's not binding the slide? (not the pilot screw that you need to come up from underneath the carb to get at)

Otherwise you may have to do what badass350X said and put it back the way it was, make sure it runs good that way and start from there.

[El Camexican]

ye its not clogged i can see right therw it

Did you remove it? I don't know your model, but there are usualy a number of cross drilled holes that can plug up in that jet. You need to pull it out and clean them. rdlsc24z may have solved your problem.

4X4van: Good point, I was thinking 4 stroke when I made the comment.

[tri again]

I really have no business in this thread but
if it ran good before the new (used) pipe,
maybe pipe has a rats nest in it? Collapsed rust?

Then the carb came off because that's what we're supposed to do to rejet for
the different flow.
Any chance there's a vacuum leak now?
Would a vac leak make it run lean?

I know these charts are not right for your issue but it's all I could find.
Maybe jog some memories at least, or find ones for a 4stroke.

Hey, I just spent an hr today trying to figure out why the tv wouldn't work.
It was plugged in, breakers were ok...........................
The power was out.

[JJMF1979]

Is the throttle slide in right?

[curtis slawson]

i have no air leaks replace intake gasket on the motor. Still dosen't run without choke run's little bit better after the new gasket but still dont run right.
was justwondering what main jet should i try 115 main jet & up and then go down from there.

Thanks im going nut's without driveing my 200x!

[KASEY]

MAIN JET IS FOR WIDE OPEN THROTTLE.,... it has no effect on your problem,,,,, you have a clogged idle circuit .. blocked pipe or an air leak,, its that simple,, running only with the choke on is a sure sign of a fuel related problem,, and NOT THE MAIN,,,,, i like the idea of putting it back to the way it was and seeing what you get,,,,,,,,,,if it runs great,,,,,,,IT WON'T... FIND THE PROBLEM,

[curtis slawson]

ok good to know im picking up a use 84 200x carb tomrrow see how it dose.I spayed around carb with not reving so there no air leak there pipe is good i can see light at each end nothing wrong there. Iv tryed to put it all back to stock pipe and jetting i get the samething now so maybe isussues with the carb now>?

MAIN JET IS FOR WIDE OPEN THROTTLE.,... it has no effect on your problem,,,,, you have a clogged idle circuit .. blocked pipe or an air leak,, its that simple,, running only with the choke on is a sure sign of a fuel related problem,, and NOT THE MAIN,,,,, i like the idea of putting it back to the way it was and seeing what you get,,,,,,,,,,if it runs great,,,,,,,IT WON'T... FIND THE PROBLEM,

[JJMF1979]

So what happened with this issue curtis??

[yamaha driver]

i would get a carb kit and rebuild it. thats what i did with mine

[Husky250]

MAIN JET IS FOR WIDE OPEN THROTTLE.,... it has no effect on your problem,,,,, you have a clogged idle circuit .. blocked pipe or an air leak,, its that simple,, running only with the choke on is a sure sign of a fuel related problem,, and NOT THE MAIN,,,,, i like the idea of putting it back to the way it was and seeing what you get,,,,,,,,,,if it runs great,,,,,,,IT WON'T... FIND THE PROBLEM,

Was waiting to see this. Or.... if it running lean at idle (need for choke) may need a larger Pilot. On my TTR with a new pipe, I have to go up on the pilot before I could even do a plug test. (Yes it's running like a champ now)

[GO OVRIT]

Whats your method of cleaning the carb. Some you can just use a can of quality carb cleaner and some compressed air, but a lot of times you can't get around soaking the carb.

[Erics350x]

adjust the mixture screw out about 1 turn and see what happens