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oh and also what is an "open air filter"? im guessing its some kind of mod? is it just basically taking the standard air filter and box off and replacing it with an aftermarket filter?

Yeah I know the amazing stuff after standing it for a while and after finding that white gunk I put a bottle of redex in at the time never bothered to buy anymore though that's my next thing to try then, the strange thing is it worked fine again yesterday! Didn't bog down or cut out once??? Just has its bad days I guess like us all lol, if that doesn't sort it then the carb will be coming apart and sprayed weather it likes it or not!!

Ahh I doubt I will be able to get it back now. I have fully  stripped down the Ped and can see nothing wrong manifold is fine pipes and wires are all fine so I have no idea what it is I got it going but decided against taking it for a ride as it has been throwing it down! Typical English weather I guess @whitenight I'm about 30 miles away from york YO43 area a town called market weighton @ mono this is exactly what it seems to be doing it just boggs down and takes so much effort to get it started again tried changing plug don't think it made any difference was still bogging down when I was even touching the throttle.

Erm not sure what size the jet or the carb is as I went to a second hand garage and got it from there its a slightly different carb to the original kymco one I think it was from a pulse 50?! That's what was wrote on the top. Nope don't have the old carb or jets that went in the bin months ago! Hmm could be the plug I cleaned it a few weeks back with a wire brush but it never made any difference to it. Will check all manifold pipes the lot later on when I have some spare time. And if it stops working again I will try get a video of the sound it makes after, just one question how the Frigg do I upload videos I'm guessing I just copy and paste the YouTube URL?
 Thanks for all the help keep up the good work

i had the carb bowl off other week and jets and carb are shiny and clean inside and this was after the problem and also fuel filter is very clean was only changed a few months ago, i tried running it with no air filter but still had the same problem brilliant acceleration but thats it :/ all pipes from fuel tank to the valve/diaphragm under the footplate seem to be in good condition with no cracks etc. same with the manifold i checked this and its fine no cracks or marks on any of it really confusing what it could be

ahh it could be not sure, it never has had a jubilee clip on the air filter hose connecting to carb just pushed in! seems strange it never had one but has been running fine before so maybe this could be the cause of the problem but i doubt it, would an oil leak be anything to do with it? it has been leaking since i rebuilt the engine after crashing and snapping the crank case in half ouch, but the leak seems to have got less than it was before it has the correct oil level though, erm it was a mechanic who set them and i gave him the ag50 maintenance book with all valve clearings etc. in so it would of been to what it says in there, i dont have a compression gauge. it seems to be most of the time that it is idling very high it will actually go 7mph with no throttle just on choke is this bad?

Hi all I have a ag50 2009,

Right so here we go, my ag starts and runs fine with decent amounts of throttle but as soon as i let go of the throttle to slow down for junctions roundabouts etc it just looses all power and dies and i then have to leave it for about 10mins to wait to get it started but even after 50 kickstarts it will idle(very high) and then as soon as i touch the throttle it dies again and i'm back to square one its becoming ridiculous now and very dangerous, the only way it will move at 10mph after it dies is if i give it tiny short bursts of throttle too much and it just cuts out. I changed oil, fuel filter, spark plug and gear oil, new carb(old one was full of white gunky crap) also checked and changed valve clearance about 1000km ago or so and it worked fine for months then just developed this problem, help please!!!