[ianthakilla]

hello i'm new to pb and i need a lil help... ok here's what going on i got the bike to start but it won't stay on w/o the choke . it have a new carb,spark plug,flywheel,and magneto and i just don't know what else to do .. can someone help me plz

 

[angrychild1997]

those it turn off right away or those it stay on for a little while then turn off? those the bike rev up when you take the choke of??? answer any of these question and i can be more helpfull, also check the fuel lines they might be clogged up

 

[ianthakilla]

it stay on with the choke but when i take it off' it stay on for like 7 sec then die

 

[EPR]

Sounds like your pilot jet is clogged. It's next to the main jet. Take off the float bowl, take both jets out clean them good and the float bowl too.
I just did that to my X18 and 125cc ATV carbs. The pilot jet is less than .020" so it clogs real easy.

 

[ianthakilla]

ok i will do that today and i will keep you up to date .

 

[CAM2]

ok i will do that today and i will keep you up to date .

While you have the bowl open remove the float restrictor tab on the bottom of the bowl.........

when you reinstall the carb set the a/f mix screw to 2 1/2 turns out and set the c-clip on the needle to the 4th notch

 

[ianthakilla]

my a/f mix screw is pre set thats what the man said when i bought it 2 day ago

 

[EPR]

My new 20mm carb on the 125 ATV had no adjustment either, it's called Smog, the USA don't want you to adj anything. I went and got a 25mm carb for $25 that has a screw adj.

 

[ianthakilla]

soo i have to get another carb ???

 

[ianthakilla]

and i clean the carb . both jets was clear

 

[EPR]

Next you need to check and see if you are getting gas inside the engine. Try starting it a bunch of times with the choke on, then.
Pull the plug see if it is wet or dry, put alittle gas in the hole, check your spark and put it back to see if it tries to start.

 

[ianthakilla]

ok im bout to try it now

 

[CAM2]

my a/f mix screw is pre set thats what the man said when i bought it 2 day ago

I guess you didnt grind the restrictor tab out with a dremel..........That tab causes alot of starting and running problems.........

Take some very small and thin washers and bump up the needle...My 150cc quad had an EPA friendly 26mm carb and raising the needle got it broken-in til I popped on an OKO 30mm carb from a scooter I have then It ran killer....

If youre gonna buy a diff carb buy a 22mm with a jetkit.........

 

[ianthakilla]

@erp i just start it a bunch of time with the choke on and the spark plug was dry when i pull it out

 

[ianthakilla]

i dont have anything to grind it down with

 

[CAM2]

i dont have anything to grind it down with

You dont have a file or a grinding stone that mounts in a drill chuck?

Putting 2-3 thin tiny washers under the needle c-clip will help give ya more fuel in the meantime but that tab is important to remove...

That tab keeps the float from dropping all the way down into the bottom of the bowl....By restricting the float movement the needle cant drop down in the needle seat far enough to fill the bowl quick enough to feed the demand of the engine when under load

You can also take a small safety pin and open up the pilotjet and mainjeta lil bit to give the carb more fuel...

Anything you do just dont uncork the exhaust mufflers until you get an adjustable carb...........Youll really have running problems

My X22 had a 25mm carb/intake,,racing CDI and internal engine/clutch mods/headbreather mod/hp foam airfilter/modded mufflers/ported head and regorund stock camshaft......It was a pretty powerful and fun ride after the mods...........

 

[ianthakilla]

what you mean by ''uncork'' you exhaust

 

[CAM2]

what you mean by ''uncork'' you exhaust

Both muffler cans are badly restricted........uncork means to remove the restrictor.

 

[ianthakilla]

ohh well i file the bowl and im still having the same problem

 

[CAM2]

ohh well i file the bowl and im still having the same problem

did you bump up the mainjet needle with tiny washers or try enlarging the pilot jet a tiny bit?