gp mx3 pocket bike engine help

Check your fuel line, make sure there are no kinks in it and the fuel can flow freely to the carb. Also if you have a fuel filter you might want to change it.

Your fuel valve may also be messed up and not letting enough fuel through.

hey trust mee one way or another ima be working on this bike lol my pops thinks u just fix one thing and it will work fore ever i just wanted this bike mainly to tear it down rebuild it or put performance parts on it

what oil are u running lol

dude we got a problem
when i tool out the cable and unhooked the spring thing and got to the clip there was only one and no posionsto put it in it was only one grove that was on the needle so i just put every thing back to gether she starts up tho

i have finaly found the problem why it does this i not sure how i did it but it ran so much farther than ever before the only problem is that my clutch keeps engeaging the drum with out throttle

thqanks too all the people who helped out but my bike feels lke it has no power

but ima try and fix it

Shawn wins the prize for a sextuple posting ..... Shawn, ya see the little buttons in the right-hand corner? One of them says "Edit" ..... means ya can post, then change it up to 24 hours, instead of making multiple posts ...

Your clutch keeps engaging the drum with no throttle? Turn your idle down ...

lol i know that but forget it is there also the ide screw is turned downbut when i put it low enouf it tends to shutt off but thanks it runs alot better but it just has no excelleration

have you stripped your petcock/fuel valve???

the seals china use arnt supposed to be used with fuel so you might have a problem there

You said there's only ONE clip position on the throttle needle? very odd .... there should be five.

i kno it should have 5 positions but in mine it has a little and i mean littletype clip thing and i think the moon clip sits in top of that and there should be 2 clips like in the pic but i mainly see one

another question my bike runs so much better but after like 5 to 10 min it starts to bog out also soon i will be making a vid on youtube about the status of the bike

When is it bogging? While you're riding WOT (Wide Open Throttle)? That could be two things:
-not enough fuel
-top end reed flutter.

First problem: not enough fuel. Change the fuel lines to 1/4", do the petcock mod, get an inline fuel shutoff valve.

Second problem: top end reed flutter. This happens when you're riding WOT, and the bike starts to hitch and jerk, stutter and bog. What's happening is this: the reeds in the engine are there to create a seal against the cylinder for your compression. If the reeds are damaged, worn, or simply too thin, at WOT, they're flapping back and forth so fast that they can't create a good seal against the cylinder, resulsting in loss of compression and thus loss of power. By swapping the reeds out for a better set, like carbon fiber or fiberglass, this problem can be elminiated.

(Being a backyard mechanic, I tried another mod on the bike, davation's cheap triple stage reed mod. If you use the search function and look up davation, you'll find it - works very well.)

thanks but ima take it to the shop first then see what i can doo and it does start to gerk a bog while i hold it wide open but when i let go it just idles also my throttle cable broke soo im just gona take it to the shop