i need someones help

Message

motorer69 · Thu Jul 14, 2005 10:37 pm

Hi guys,

I have had my bike for about a month (new to motorbikes) and just recently as ive been getting up to about 50 km/h its been strugling, jumping, backfiring whatever it is you probably get at what im talking about if not ill explain more. Have you got any idea of what it could be due to? any help i'd really appreciate it, ive just started so i dont know much. thanks all

Thu Jul 14, 2005 10:42 pm

it would help if you would tell us what kind of bike it is.

Wizzard · #3 Unread post by **Wizzard** » Fri Jul 15, 2005 1:28 am

And if it has had any modifications done to it .
Regards, Wizzard

motorer69 · #4 Unread post by **motorer69** » Fri Jul 15, 2005 9:24 am

um it is a pitbike 110cc etc. the airfilter is easy to get at and im just wondering about something. a bit of fuel over flowed the other day with i was filling it, maybe this is the problem? anyway im very ken to hear what you guys have to say about anything

BuzZz · #5 Unread post by **BuzZz** » Fri Jul 15, 2005 6:44 pm

Is there a brand name on the bike? Maybe a catchy set of letters stenciled on the seat or fender? What color is it? Throw a guy a bone.......

Anyway, sounds like maybe a high-speed ignition fault or a rich main jet and/or needle combo. It's not bouncing off the rev limiter is it?

motorer69 · Sat Jul 16, 2005 11:14 am

hey thanks for the replys. Its red and black. some japanese brand, pretty close to a honda 100cc ive been told. When i get to a certain speed, and its around about the same speed each time, the reves jump and it gives off little backfires. at first i just thought the bike was cold so walmed it up a bit more, changed the oil...etc. hasnt helped.

#7 Unread post by **9000white** » Sat Jul 16, 2005 2:31 pm

from what little we know about this mystery bike it sounds like maybe the main jet in the carburetor is clogged up--take the air cleaner off and close up half of the carburetor intake throat with duct tape and run it if it gets better you aint getting enough fuel through the main jet--if it runs worse you are getting too much fuel through the main jet.i am assuming that it is running bad in the mid or wide open throttle position.

BuzZz · #8 Unread post by **BuzZz** » Sat Jul 16, 2005 7:55 pm

9000white wrote:from what little we know about this mystery bike it sounds like maybe the main jet in the carburetor is clogged up--take the air cleaner off and close up half of the carburetor intake throat with duct tape and run it if it gets better you aint getting enough fuel through the main jet--if it runs worse you are getting too much fuel through the main jet.i am assuming that it is running bad in the mid or wide open throttle position.

Sounds as close as anything at this piont. Could have caught a chunk of crud let over from manufacture in a jet or something.