Dt 250 No spark
Hey guys, I have a 1975 DT250 I'm restoring. Wheb I got the bike the source coil was removed because the PO was going to upgrade to CDI. Andy C. gave me assistance with soldering the source coil back on correctly and where the wires go. Tested the source coil and the resistance is correct. My problem now is no spark. Power is going to the plug, it will light up a test light but no spark. The points are within .012 and .015 and the gap I believe is correct. The ignition system is work because no power in off position, making power in on position. I was wondering what else should I be checking?
CaptCove wrote: The ignition system is work because no power in off position, making power in on position.
Where does the power come from? Kicking it over? A battery?
Where the Yamaha Enduro is still a current model...
RT325 wrote: I'm guessing its got a condenser fitted seeing things have been removed. The black from the mag loom can go direct to the plug coil to eliminate anything in between like switch etc. No battery required. Points opening & closing + contacting. Source coil not shorting somewhere. Once you have spark make sure you tighten the flywheel good & tight before starting.
RT325...you always caution to tighten the flywheel but really tight. Your persistence was with me last weekend when assembling my RT1B. It made me wonder how tight? I'm not sure I've found an actual torque spec. I tightened mine to 60 ft lbs....pretty much same as primary gear on crank, clutch nut and output shaft sprocket. I didn't want to twist the end of the crank off...but I think I could have gone tighter?