Hi can anybody give me a bit of help....got a 125cc 9J and the revs have started to die as I stop at lights etc. I am just a female with not much bike messing around hours (can do an oil change) and am not sure where to start looking !!!. Have checked air filter and spark plug...oh and what is a really good oil as I have no motorbike book thing to read. Are they like a Honda engine the engine looks like my chituma 125 that got pinched. That was a Honda replica