skooterbum4real wrote: ... I installed the gas tank, put in a couple gallons, and tried to fire the old girl up. I get a soft poof, out of the exhaust, and it doesn't do it very often. There's no real signs of it trying to start up. I checked for spark, and I'm getting a very small yellow or blue spark at all four plugs. This was checked with one of these....
www.amazon.com/Motion-Pro-08-0122-Igniti...gnition+spark+tester
I'm not very impressed with this tool as I'm only able to close the gap of the tool to about .100 of an inch. Which is a ridiculous gap to test for a spark.
I got all my electronic ignition parts from a good running 1982 kz650 CSR donor bike.
I'm questioning these things to start with..... I ran the yellow/red wire to the + side of the coils. I ran the black and green wires to the - side of the coils. Is this the correct routing of these wires ?? Also I'm wondering if I need to use different spark plugs now that I'm running the electronic ignition ?? Maybe there's no difference, but should I start running the plugs required for the 82 kz650 donor bike, rather than what's required for my 78 kz650 ??
...
I guess I better check the timing while I'm at it. Is there anything else I need to do to troubleshoot this ??
Wiring should be yellow/red to positive as you have it. But there are a few other things to check to make sure the spark is in phase with the motor.
Right coil fires cylinders 1 and 4.
Left coil fires cylinders 2 and 3.
Black coil wire goes to right coil's negative.
Green coil wire goes to left coil's negative.
When cylinder 1 and 4 are at top dead center, the rotor should point to the left, (or toward the rear of the bike), not to the right (or front of the bike).
If the advancer timing plate was taken apart, the magnets can be put together in the wrong orientation. There is a way to tell if it is correct, if you think this may have been a possibility.
A good spark, in open air, should jump at least 1/2 inch. But make sure both plug wires of the same coil have a path to the engine. If you leave on unconnected, it stresses the coils and igniter and can cause damage.
You should be using the coils from the donor bike. The old points coils are not a good match for electronic ignition. I believe the resistors are in the caps on the electronic ignition coils. You should run non-resistor plugs if you have resistor caps.