Just did some electrical resistance checks on my ignition system(2000 ZRT 800). Both coils primarys check out to be 0.50 ohms. The spec is 0.29 - 0.39. Secondary leads are ok. My ignition timing sensor checks out ~700 ohms. The spec is 80.8 - 121.2. Now, I am not ready to go out and buy new coils. Since both check out the same (0.5 ohms), it is hard for me to believe they both are bad. Besides, .10 over spec isn't going make me spend $200+ for two coils. Now, the ignition timing sensor not only checked out way out of spec, but physicaly looks bad. I mean there is rust on the magnetic pick up, as well as a chip out of the plastic housing near the pick-up. There is also some minor rust on the reluctor on the flywheel. Am I right in thinking that this sensor is what tells the CDI to fire the coils?. The higher restance in the sensors windings would mean that it is putting out a lower voltage signal than it should. This is a magnetic pickup sensor, similar to ABS wheel sensors on your car, right?. So it produces its own voltage right?. Please let me know if I am on the right track here.
Rob H
Rob H