no spark at all. ohm tested coil and wire and boot. continuity tested every wire from end to end. all wires tested good. replaced cdi box, also replaced stator. new plug. tried disconnecting key switch, and kill switch. no spark yet. going by schematic i have tested everything i can. and replaced what i couldnt test. must be something simple i am missing. please help!!! i am out of options that are within my knowledge. thanks. i have a tech. manual. and have done everything it said to do. still no spark.
no spark on 1989 blaster
- Thread starter kole58426
- Start date
the tors is disconnected. it has never been hooked up sence ive owned it. where is the source coil? is that different from the main coil above the engine?
The source coil is under the flywheel. It's the wiring that comes out of the left side of the motor and hooks to the wiring harness back near the carburetor.
im sorry i thought that was called a stator. yes i replaced that. it has 2 wires going to it. i had to solder the wires on. there is only 3 componets in there. one for the lighting circut, one for the charging circut, and the other is for spark. and i replaced the one for spark. thanks
the source coil is part of the stator so you are right to a point
have you checked the ohm reading on it? and how did the flywheel look?
no i have not ohm'ed the new source coil. just assumed it was good. flywheel looked real good. a little light rust but i cleaned it up.
The source coil is one of the large ones, the trigger coil is the small one. Both are needed for the ignition system to work. The source coil "charges" the ignition coil with power and the trigger coil breaks the circuit causing the ignition coil to fire. Sort of like a 12V system with points... only a bunch simpler.
I'd say if you were in there working on something either that's not all that was bad or you diddled with something you didn't intend to.
The service manual has an excellent walk through to diagnose ignition system failures. All you really need is an adequate combo volt/ohm meter (or any "multimeter") and walk through the steps one by one. Ultimately the trouble shooting guide leads you through all of the checks and lays it at the CDI unit's feet... the last line is if everything else checks out good, replace the CDI unit.
I'd say if you were in there working on something either that's not all that was bad or you diddled with something you didn't intend to.
The service manual has an excellent walk through to diagnose ignition system failures. All you really need is an adequate combo volt/ohm meter (or any "multimeter") and walk through the steps one by one. Ultimately the trouble shooting guide leads you through all of the checks and lays it at the CDI unit's feet... the last line is if everything else checks out good, replace the CDI unit.
thanks for the help. i thought the charging coil didnt have anything to do with the spark circut. what is the ohm reading supposed to be for the trigger coil? so i can make sure it was good when i got it. i have gotten thing bad from factory befor. is there a way to ohm the charging coil or to check if its working? i did replace the trigger coil or as i was calling it the stator. i guess i could ohm the old one as well. i guess the only way i know is to replace the charging coil. un less there is more i could do????
