ds 650 hard starting... have to jump start; after starting it idles fine but when I give it throttle it backfires, tac goes crazy, light goes dim...changed plugs, cleaned carb and battery is good.... seems to be electrical but not sure... any and all suggestions on what could be causing problem would be appreciated

 

Did you put the jets back in the proper place when you cleaned the carb? It will idle with them in wrong but backfire when given any throttle.

 

whens the last time u adjusted ur valves?

 

Never. bought the machine used.

 

yea that's what i was thinking. Do you think this would all so cause the tac to go crazy and tac light dim?

 

are you sure you have a good battery

 

the battery is about 6 to 8 months old. I am assuming its still good. put charger to it, did not need any time on the charger. however did not get it load tested.

 

thank you guy's for all you input. At least have some were to start trouble shooting this weekend.

 

I just bought a 01 DS650 and drove it about 10hrs now and now am having the exact same problems. It was running fine, I was headed acros the frozen lake when all of a sudden it just bogged now it is doing exactly what this guys ds is doing. The battery is fine but needs charger and starts right up, without charger the starter solinoid just clicks fast. The solanoid terminals were wet and frozen so I cleaned the battery and all terminals thinking this would solve the problem but noluck. It idles fine but when I crack the throttle the thing starts missing and backfires and tach goes crazy. Wierd. I was thinking maybe the solanoid is corroded and it not letting enough voltage thru the ignition system thus causeing the missing and all problems. Just a theory IDK. Ill see if replacing solanoid will fix problem.
Anyother solutions please.

 

Check your rectifier, if it has taken a dump and is frying your cdi it will run like you are describing. Does your DS ,either of them, have an aftermarket cdi? If so what kind? If it is not a good name brand it may have taken out the rectifier, had it happen to me 3yrs ago.