No Spark?

My little brother has an '81 750. His original wiring harness was shot, so we found one out of an '80 that was almost brand new.. THere were a few little differences, but we got everything to work properly. The only thing left to figure out is that there is no spark what so ever, We have power going to the coils, but nothing after that. We have tried 4 different coils, none of them work on his bike. Any ideas or thoughts?

Maybe a bad igniter? Did you check the coils to see if they were bad?

Haven't checked the coils yet. I find it hard to believe that 4 coils are bad, when I know two were good last year. Maybe we'll switch parts from my bike to see if it will throw a spark.

Hopefully you have a service manual with the wiring diagram. Maybe something is still unplugged? You say power at the coils? Battery voltage on the red/ yellow at the coils, then see if you have a break in the ground signal from the ignitor by placing a test light across the ignition coil and crank the motor over. It should blink. If not check the connections to the 2 pick-up coils, and also the wiring to the ignitor.

Ohm Checking Pickup(Pulsing) Coils

The pickup coils on the Kawasaki’s with the factory supplied electronic ignition can sometimes fail or become intermittent due to heat and vibration.

1.Trace back from where the pick up coils are mounted,(under a right side CD sized cover) locate and disconnect a small 4 pin connector. Using a multi-meter set on OHMS and range of 2K, check between the BLUE and BLACK wires(#1 and #4 sparkplug wires) for between 360- 540 OHMS.

2.For #2 and #3 sparkplugs the wire colors will be YELLOW and RED, again 360-540 OHMS. The 550’s,650’s & 750’s may be backwards to the Z1’s,Kz900’s,Kz1000’s & Kz1100’s.

3.If the pickup coils are suspect of failing due to heat, they can be stressed using a hair dryer without the need of the engine running.

4.A replacement set of pickup coils might be obtained from a dealer who serviced the police Kawasaki’s.

5. If replacement pickup coils are not available, your next choice would be to order a Dyna “S” electronic ignition system from www.z1enterprises.com It replaces the IC igniter with a smaller module located where the mechanical ignition advancer was mounted.

6. Checking with Kawasaki.com website has determined that the Pick up(pulsing) coils are available . The pulsing coil # is 59026-1133 and replaces the older # 1002, 1012 which were used from the MKII motors until the 2005 P24.

7.Check the small 4 pin connector that the pickup coils connect to for corrosion/loose pins too.