Hi all i would like some advice on my Chinese Scooter its a 125 cc 4 stroke twist and go aprox 5 years old i have owned it for 11 months.The problem i have is today whilst coming back from shopping i noticed that there was no real power when i twist the throttle , it moves foward but picks up speed very slowly even on a flat road , it wont seem to go above 30 mph even when the throttles open right up , there's also a lack of power or pull when i open it up. I have little experience with the workings of engines or bikes but my father in law does, before i take it down to him what would be the first things to look at ?.I have noticed that it seems to act well when its on the stand and throttles nicely ( father in law said it sounds like a clutch issue?) Anyway whats your opinion on this?.whats strange is how it was working well when i went shopping only for it to act like it is now when i return.Also is it normal for a speedo to show 50mph on the clock but your actually only going 40mph? i tested it with a satnav to confirm this was the case , Thanks in advance for any advice given with this
i also have just filled the tang up to full prior to this occuring , would bad fuel cause this issue? bit of a long shot but a google search brought this up
everytime i fill up at tesco petrol station in my town my bike plays the funny bugger and begins to act like it has a flat spot (i call tesco fuel kangeroo fuel) also i wouldnt go by what the sat nav says ... if your that worried about it get a buddy to drive next to you on the dual carrage way at 50MPH and if i remember correctly ... when i was still on my 125cc bikes i over fillled one day (petrol) and it played funny buggers with the fuel tank and to what i can understand basicly it created a vaccume in the tank and began to starve my engine of fuel. just released the cap to hear it suck air in while i was removing it and the bike returned to normal but in saying that it could be anything from dirty fuel to a fault with the bike ... not trying to worry you but one of the petrol stations in my area a while back had a large number of customers complaining about water in the fuel but as everyone will tell you ... when it comes to problem elimination start with the cheapest option
I sometimes get probs with fuel flatspots etc people think im mad but notice every change in my ped I use shell nitro 98 ron if poss to gaurentee some level of performance now
have you tried a new spark plug and is your oil topped up and air cleaner clear before you go down clutch variator roller route??
ive herd that the high octaine stuff (i guess thats wut your talking about) can give you engine problems if you constantly use the stuff ... something about your engine burning hot all the time
