had the bike running a while ago after id rebuilt it then i think a loose wire must of shorted out on the frame and blew something so i replaced, cdi, stator and flywheel as i had a spare, then put tham all on today and it was sparking and spluttering but wouldnt start, tryed a few plugs and another stator as i wasnt sure if spark was strong enough but the same thing happened. now its stopped sparking and ive tryed another stator but still not sparking but im not sure if this was a bad one when i bought it. any one got any ideas whats causing this as i could do with it going pretty soon as my mates waiting for it any help appreciated cheers
unplug stator from the rest of the loom i.e just have the stator goin to the cdi not the rest of loom then kickstart it if it starts the a problem with your loom (tie a shoelace around sparklug cap if it starts you can pull this to cut engine out)
only thing it can be is a poor earth... if it is a non plug type cdi and youve pulled the wires out of a plug type cdi lead then its probablky interferience through the cables.. cut them off and replace the plugs wiht coverd plugs (insulated) and try again. check to see the green wire on the cdi is earthed wiht the ignition off and NOT earthed with the ignition on... if not theres a prob wiht your ignition switch/wiring.. the white wire should read as an earth (unless its a seperate earth cdi in wich case there will be a black wire on the side) chace your tail.. no spark means a wire is ether not connected or the wrong wire is connected to the wrong wire. or a broken componant.. just gotta chace your tail and repeat every test you have already done.
realised i got a couple of wires caught when i fitted the forks a while ago so that explains the weak spark now got it sparking and running occasionally but when it does it starts off at normal revs and gradually gets to high revs without me doing anything, thought it was the choke but tryed a manual and 2 autos with the same result, ive ran out of ideas of what could be causing this now?? so any ideas on this??? cheers
yeah i thought it may be the mix, it will stay at constant revs for about 5 secs then it go up to around half revs then the same to just about full revs. i had a play about with the mix, is 2 1/2 turns out where it should be? cheers
need to set it to the point your engines happy.... ajust the bike hot. thats idle mix and speed.. let it cool don, using the choke to start the bike (adds more fuel obviously) if it doesent start wihth the choke you need to change the choe jet... if he idle mix screw is happy all te way in or more than 3 turns out it needs a different pilot jet. it depends where on the carb the screw is wether its biger or smller. gt a pic of the side of your carb, the idle speed and mix screw and ill tell you whatway is what
heres, my carb, its just a runner 125 carb 20.5mm, ill have a play about with the mix's today, yesterday it would only start when the engine is completely dry of fuel then with the choke on, ill put a bit of petrol in the tank itll fire then the revs rise and itll not start again cheers
ok, the idle control is BEFOR the slide so it control's air.. so the more you wind it out the leaner the mix will get.. if you have to wind the screw more than 2 turns out it needs a smaller pilot jet.. vica versa
