Not revving

[Casual_rider]

Hi all

I have a cheap CAG bike that has a few mods such: fatboy exhaust, dellorto replica carb and a 50.177cc head with larger cylinder and such. I bought the bike with these mods and when i first rode it, it was great. But after about three rides it stopped reving like a two stroke should and just plain ran out of balls. I played with fuel mixture which worked for a short ride but it went back to being slow and not reving, it was running really rich so my brother thought he would have a go at adjusting the jets on the carby, but there was no adjust on the outside, so he puled it apart cleaned it and tried to adjust the jets. I think the carby maybe buggered or something in the carby I am not sure and I may redo the fuel mixture. Anyone got any ideas I would really appreciate any advice anybody gives. This post maybe in the wrong spot and if you want to move it ive got nothing against that, i was pretty tired when i first posted it.

[RD RACING]

you need to work from the fuel / fuel tank and right down to the carby. your engine could have some restriction in the fuel line to carby. cleanout the carby.

[Casual_rider]

Yeah have cleaned the carby several times, I should check the fuel lines, ill do that tommorow.

[gromet]

Try cleaning the air filter or take it off. also the gasket for the exhust if its to small it will restrict air flow...

[cagdude]

Did you clean your jet out? The same thing happened to me and that fixed it

[Casual_rider]

Yeah cleaned the whole thing, i think teh problem is teh jet is too big, but ive got new carby now anyway, just waiting on a manifold.

[akim21]

might be the exhaust pipe, try the stock one

try running no air filter on the carbie, maybe use stocking to cover the opening

[Casual_rider]

i dont think its the airfilter because we quickly ran it with it off, just a quick test and it didnt help. Might be the exhaust, i might have to put my bike back together and see. I'm not sure itll work because when the petrol is about to run out it leans up of course and runs really well.
Ohwell, thanks for the input guys

[SIKKO_X2]

im not on expert on cags,but maybe play with your fuel air mixture on the carb,it might be a bit too rich so lean it out..
hope this helps
cheers