Quote:
Originally Posted by drbninja
Troubleshooting no spark. I only have a multimeter. Waiting for parts to build a peak voltage tester to complete testing pickup coil and ignition coil. Safety switchs shouldnt be an issue as it cranks and battery voltage is good as it is being supplemented by another bike. I wish I had another cdi box to swap, but if everything else looks good I'll probably just buy a new one.
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Tell us more on history of this bike and this problem. Also read this thread:
https://www.ninjette.org/forums/showthread.php?t=300809
Any one of following can cause no spark (not inclusive, there are others):
- fusebox and fuses
- wiring between fusebox to ignition box
- ignition switch
- plugs
- plug wires
- wiring between ignition switch to ignition box
- wiring between ignition switch to coils
- wiring between ignition box to coils
- crank-triggers
- crank-trigger pickups
- crank-trigger wiring and connectors to ignition box
- ignition coils
- ignition box itself
Without testing each of these stages (follow the electrons), you might as well replace ALL parts above
Cheapo USB pocket-scope and 'noid light are better tools to use in this case.
Easiest to start at end and work backwards:
1. Plugs, test on other bike that runs
2. Plug wires, measure resistance end-to-end
3. Coil, measure resistance primary, secondary. Manually trigger spark test. Chances of both coils going bad simultaneously is extremely rare, pretty much impossible.
4. Measure for +12v at ignition coil
5. Use noid-light to test for grounding pulses at coil
6. Test for grounding pulses at ignition box
7. Measure for +12v at ignition box
8. Measure for ground at ignition box
9. Measure diodes
10. Measure stop switch (this is culprit lots of times)
11. Pull out ignition and main fuses to measure resistance across their legs
12. Measure resistance of wiring segments end-to-end
13. Measure impedance of pickup-coil
14. etc.
As quick test, ground green/black wire from ignition box and see if it runs