TenaciousT
New Member
Hi out there. I have a 48cc Grubee Skyhawk gt2b with a yuandong carb. the prolems started from the begining. Crappy Chinese bolts and fittings. Well replaced most of them so far because I have had it on three different bikes. third ones been a charm. but was having trouble with spark and carb. would idle great all day, but put under power it would 4-stroke and fall right on it's face. i left it alone for the winter (i live in Montana:>) but we are having an easy spring and i need a cheaper mode of transportation. got it all hooked up the other day but it still would only go to about a quarter throttle and die. adjusted the carb and it idled great. no power and still fell on its face. so i read on this site and others that loads of people were having the same problem. they had sent me a spare plug, as the first one kept fouling, so today i put it in, removed the red cover on carb. but left black spacer that keeps the carb from sucking the filter in. went for a ride. at first i thought i was getting too much gas, but soon realized a few more small problems that i had created. the cap that attached to the spark plug was a peice of junk. replaced it with a ngk. improvement. but only alittle. so as i was riding, still with my red cover off, i placed my hand over the carb with a small space in between my middle and ring finger, took off like a champ. so i apllied a low grade tech idea. i put duct tape over the black peice. restricted it to a litttle less air. improved alot. was able to climb a steep grade hill but is still alittle sluggish. the set screws on the carb are only for when it sits and idles. now with a little more tinkering i should be able to get some more out of it. im just not sure if im still getting too much air or if it is getting too much gas. have to wait till tomarrow to find out. but will keep you all posted. any ideas to help me would be great but i'm broke and have to use parts around the house. please keep that in mind. Peace