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No spark but ohm reading...

  • Thread starter Thread starter Defore
  • Start date Start date
D

Defore

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My 1982 gs550 only sometime fires. the secondary on 1-4 is 25k ohm and 2-3 bouncing from 25k to 45k. primary on both are around 5.6. the orange and white wires going to the 1-4 when not connected to the coil is 125.7k and orange and black is 144.7k.

I keep bouncing around from generator to cdi to coils to coil caps... can anyone tell me what to do? Also can someone please give me the colored wiring diagram and the info on how to test all of my ignition system.
thanks everyone
 
Defore said:
My 1982 gs550 only sometime fires. the secondary on 1-4 is 25k ohm and 2-3 bouncing from 25k to 45k. primary on both are around 5.6. the orange and white wires going to the 1-4 when not connected to the coil is 125.7k and orange and black is 144.7k.

I keep bouncing around from generator to cdi to coils to coil caps... can anyone tell me what to do? Also can someone please give me the colored wiring diagram and the info on how to test all of my ignition system.
thanks everyone
Click to expand...
That primary ohm reading sounds high compared to ones that I have at about 4 ohms. Are they stock coils- most likely beige color? The 125.7k and 144.7k doesn't mean much as ignitor grounds these out as it wants. Basscliff should have a useful colored wiring diagram along with everything you want to know about most everything- visit often and be amazed!
 
One thing you can try is to solidify the cap to wire connections by unscrewing each plug cap, trim the wire back about 1/4" until the copper wire is clean & fresh, then twist the caps back on. Secondary readings with stock coils should be around 35K I think.

I agree with Tom concerning the primary readings - all the stock coils I've checked are between 3.5 - 4.5 ohms.
 
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