yamaha dt 125 x supermoto 56 modle starting problem

[anthdt125]

hi im woundering if any1 can help i have a yamaha dt 125 x 56 model and it wont start at first id been on the bike riding around then when i stopped and had a tab i got back on but realised it would not start which i thought strange as i only used to have to touch the button once and it would fire i took the plug out and realised there was the smallest spark ever like barely could se it so i stripped the bike down where i was at and got a freind to fetch me my spare cdi unit coil and new plug i swapped them over put it all back together still nothing so i rang for recovery in the meantime i thought bollocks ill try bumping and it fired straight up i was puzzled so i cut it off and tried it off the button it fired up no probs had me scratching my head as i do most of the work on my bike myself so the next day i went out fired up as normal and it done it again so i went home but kept the revs up as i didnt want it to cut out when i got home it cut out and now it doesnt fire off the button nor does it bump any1 got any suggestions??

[arry]

[anthdt125]

its strange coz ive left it for a few days at our lasses and now its just bumped so i rode it home and its cut out again the engine runs sweet as a nut ive done all the mechanical work on it myself but as i say the spark is really poor and ive changed the obvios things i wish it was mechanical atleast id be able to know straight away what it was

[prawny1]

side stand switch is a bug bare on the dt's

Check it out/ bypass it to see if the bike fires.
____________________
hellkat wrote:

Some people are only alive cos its against the law to kill them.

[anthdt125]

i dont think theres any point in that coz the bike ticks over with the stand down its only when u knock it into gear with the stand down the engine cuts off also ive tried to start it in gear with the stand down and it wont fire so i think the switch is ok ive ordered a stator it should come tomorrow as ive took it off and it smells like scale electrics that burning type smell

[MattWadz]

sounds strange :S i had a very similar problem with a DT50mx a while ago, everytime i knocked it into gear it would instantly stall :S could be a dirty connection?


____________________
Pitbike x2, Mini Moto x4, China Quad, 02' Suzuki AP50 > 03' MBK Nitro > 86' Suzuki GP100 > 02' Yamaha Jog R > 57' Honda Lead 100 > 95' Piaggio ZIP Rst 50 > 51' Suzuki TS50x > 83' Honda CB125TDE Twin > 51' Yamaha Aerox > 98' Kawasaki KX60 > 89' Yamaha DT50MX > 80's Honda QR50 > 05' CG clone > 125cc China Pitbike > 91' Honda MTX125 RW-L > 09' Peugeot Speedfight 2 LC LR > Lucky MX 140cc > Apache Tomahawk 50 Quad (current = 2010 Yamaha WR125R

[prawny1]

Yes but if the switch is playing up or the stand spring is a little loose the bike will think the stand has been put down and cut out even if the stand is up.

It "should" still start in neutral with a dodgy stand switch unless the neutral light/ circuit was faulty too, telling the bike it is in gear all the time.

It "should" also start in gear with the stand down "if" the clutch lever is pulled but would cut out when the clutch is released unless the stand is raised.

The neutral and clutch switches over ride the stand switch.

Starting inhibitor switches are a pain, unless all three are working the bike won't run.

Sometimes if you have multiple switches gone you can't even bump start a bike.
____________________
hellkat wrote:

Some people are only alive cos its against the law to kill them.

[anthdt125]

ok i will have to borrow a solder iron and ill give it a bash i took the swithch apart and it looked ok but im getting to that point now where i will try everything its a pain in the arse especially when im doing 12 hour shifts thanks alot ill keep yous posted when i get a chance to attack it much appreciated