Pulse Adrenaline Full Throttle problem, HELP!?!

Hi guys, used the forum a few times to help solve a few dilemmas I've had with my trusty 12plate Pulse Adrenaline.
However there's one thing I can't seem to overcome

I can't go full throttle for more than 2 miles, without what seems to be fuel starvation.
I've cleaned and checked the carb, The fuel tap and line, The spark plug, Air filter, Airlines, and cleaned the Tank. Every now and then it lets me and just when I think great its running like it should, it starts spluttering on like I'm running out of fuel (with a full tank) Throttle response becomes delayed, Acceleration is diabolical. I've had it 7 months and its done it since i got it
The guy at the garage i bought it from is about as much use as a dose of the clap and I've given up with him.

But I'm seriously losing patience now and I'm really considering getting rid, as this problem is becoming a real big problem.

Any help??

Did you tried to to raise needle or use bit bigger main jet?

Quote:

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Originally Posted by Zorge

Did you tried to to raise needle or use bit bigger main jet?

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No everything is standard

Start with raising needle.

I am not sure which carburetor they have on those?


Maybe it is what you have or not?
http://www.ebay.com/itm/MIKUNI-Carbu...item336e790938


Here is how it works….
http://www.iwt.com.au/mikunicarb.htm

I think that on his bike is some CV type carb.

I do not think the 125cc do, the 200cc and 250cc do though.

http://www.pulsemoto.co.uk/XF125GY-2B_parts_CRB017.php

That bike likely has a 26mm, not the 30mm.
http://www.ebay.com/itm/26MM-MIKUNI-...-/200193940448

Do you get an engine splutter when you are at full throttle and you close the throttle too quickly? because I had a simular problem and it turned out that my main jet was too big but the same would apply if it was too small or clogged. You could also replace the orings on your carb and intake boot and make sure it's securely bolted to the cylinder head as you could have an intake leak. Failing that replace your carb, they are only like £20.

Thanks for the replies guys only just noticed.

I've been scouring the old internet and I've read somewhere that the seal on the choke lever is prone to going. Could this be it. I am just looking at getting a new carb as its really stressing me out and I have a long journey to make at the weekend

Its a Mikumi VM carb so I'm led to believe

A VM22 to be exact.

Aha, thanks mate!!

I've sorted it by the looks of things.

Looks like Air starvation. And condensation was building in the air box. Air filter was soaking. Took the sode panel off the airbox and its running sweet
With quite a meaty noise too!

Thanks for the help guys