Can anybody help me i have a f-reg honda nsr125r and it wont start i have checked for spark and there is a good spark, i have checked the fuel tap and the carburettor and they are fine the fuel comes out the tap and the carburettor was clean and none of the jets were blocked what do i do? there is good compression but it still wont start! could the timing of gone out somehow by magic or could it be the spark plug is loosing pressure PLEASE HELP ME!!! if the timing is out can anybody tell me how to adjust it and whether theres any marks to lign it up to! if anyone can help me it would be very much appreciated thanks rockintrick@hotmail.com

trick, January 2007

you cannot adjust the ignition timing its set in the cdi unit,but there are a list of things that can stop it running mate,ie..broken reed petals in the reed block blocked exhaust pipe,old stale fuel,fouled spark plug,leaking head gasket can wet a plug and stop it sparking,dodgy side stand switch dodgy ingnition switch,dodgy kill buton, leaking crankseals.and so on its hard to pinpoint the problem unless you individually eliminate these things,i know i have had a problem with this model before where the spark would breal down due to a faulty primary ignition coil or stator coil so that may be worth a look but its hard to see if its ok you just need to get a replacement really.good luck

adam bike doctor, January 2007

Try a new plug, I had that problem a few times with moto-x bikes. It sparks ok out of the cylinder but when replaced it won't start, just the occasional back fire.

tony transit, January 2007