Problem, Help ?

[lewisb01]

hi, ive got a speedfight 2 and ive got a problem with it. well to start off it just dont wanna go. it ticks over fine. just when you pull the throttle to move it struggles or when you full throttle it. it just makes a loud of noise like it trying to go but it moves a few yards then stops and maybe a few more. then it will cut off n a pop will come out of the exaust. ive had the carb checked and changed see if it was that. petrol was changed n toped the oil up too. i just dont know what else too do so anything would help thanks

[TUG]

Automatic choke on them, But that mixed with Bad air/fuel ratio means its going to kill itself. It could be a wide range of problems so its hard to diagnose really without seeing it.
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Haz ER-5, innit!

[27cows]

Sounds like it could be ignition related. Bikes will often start with a weak spark but misfire and bugger about under load. Check the obvious stuff (plug, plug cap, HT lead, coil, alternator wiring, ignition switch). Wouldn't hurt to give everything a blast with WD40, see if that helps.

[lewisb01]

il get some wd40 and see what happens cheers.