Peugeot Speedfight 2 100cc starting problem!! HELP

[lukeward89]

Alright guys,

basically, i brought my speedfight back in april,
had mot and tax worked perfectly started first time ( doesnt have a kick start btw) then one day was riding come to red light stop and it cut out and wudnt start again, makes the noise to start n n n nn n but just not firing at all, this was back in june and past months ive been trying to access the problem, so here is my dilemma im in,
i have a strong spark, petrol oil compression power, lights horn etc all work fine, i brought new start motor relay still didnt help, checked the starter motor is fine, drive band in tact, working fine, so im starting to think its the immbolizer, and lookin into gettin a cdi bybass unit, which is like 80 pounds or something, but the immoblizer light seems to be working fine like it blinks then turn key and flash then goes off which im assumming means its all running fine, i dont have alot of money to throw at this bike because if it isnt the immbolier then im at a loss at what it can be? is there anyway i could definatly know if it that? ANY help would be really gratful as i dont know anyone who knows about bikes that can help me and i dnt wana get taken advantage at garages specially with christmas around corner thank you

[Mattyboi]

clean the carb, check the exhaust is clean, check the filter is clean, check the plugs again if none of these its a fuel blockage, have you topped up some dodgy fuel lately as well? ive heard this happen before with dodgy fuel as well between the carburetter and engine, on the inlet tract, there is a pipe which goes to the fuel valve,the pipe perished and split causing NO vacuum. i replace this if you have one and it should work.