Coil OHM readings on a 78 kz650b

Does anybody know the stock OHM readings for the coils on a 78 kz650b?

See if this helps, Ive listed the primary(small wires) and secondary(sparkplug wires/leads) for Kawasaki ignition coils for the 80's bikes.

Ignition Coil Primary And Secondary Wiring

Ignition coils on the 80’s Kz1000,Kz1100’s and Gpz1100’s are wired the same, that is as you sit on the bike, the LEFT ignition coil primary(small wires) are two wires, RED and BLACK. The secondary (or sparkplug wires) got to #1 and #4 sparkplugs.

The cylinders are numbered left to right as you sit on the seat; #1,#2,#3, and #4.

For the RIGHT ignition coil, the primary wires, again are two wires, RED and GREEN, with the secondary going to #2 and #3.

The RED wire gets it’s voltage from the run/stop switch on the right handlebar switch pod.

The BLACK and GREEN wires connect to the IC Igniter(if the bike has the Kawasaki supplied electronic ignition) it actually gives the coils their grounds to fire the sparkplugs.

Primary(small wires) side of the coils will read between 1.8 to 3.0 ohms.

Secondary(sparkplug wire ports)side of the coil will read between 10.4K to 15.6K ohms.

Keep in mind that the smaller 4’s (650 & 750) may have the wiring reversed, that is the RIGHT coil primary will be two wires, RED and BLACK with the secondary(sparkplugs) going to #1 and #4.

The LEFT coils primary wiring would be again two wires, RED and GREEN, with the secondary(sparkplugs) going to #2 and #3.

These engines have what is known as a “Wasted Spark” that is, a sparkplug will fire during an exhaust stroke. It does no damage and many other motorcycle engines have this design.

MFolks wrote:

See if this helps, Ive listed the primary(small wires) and secondary(sparkplug wires/leads) for Kawasaki ignition coils for the 80's bikes.

Ignition Coil Primary And Secondary Wiring

Ignition coils on the 80’s Kz1000,Kz1100’s and Gpz1100’s are wired the same, that is as you sit on the bike, the LEFT ignition coil primary(small wires) are two wires, RED and BLACK. The secondary (or sparkplug wires) got to #1 and #4 sparkplugs.

The cylinders are numbered left to right as you sit on the seat; #1,#2,#3, and #4.

For the RIGHT ignition coil, the primary wires, again are two wires, RED and GREEN, with the secondary going to #2 and #3.

The RED wire gets it’s voltage from the run/stop switch on the right handlebar switch pod.

The BLACK and GREEN wires connect to the IC Igniter(if the bike has the Kawasaki supplied electronic ignition) it actually gives the coils their grounds to fire the sparkplugs.

Primary(small wires) side of the coils will read between 1.8 to 3.0 ohms.

Secondary(sparkplug wire ports)side of the coil will read between 10.4K to 15.6K ohms.

Keep in mind that the smaller 4’s (650 & 750) may have the wiring reversed, that is the RIGHT coil primary will be two wires, RED and BLACK with the secondary(sparkplugs) going to #1 and #4.

The LEFT coils primary wiring would be again two wires, RED and GREEN, with the secondary(sparkplugs) going to #2 and #3.

These engines have what is known as a “Wasted Spark” that is, a sparkplug will fire during an exhaust stroke. It does no damage and many other motorcycle engines have this design.

Ok on further inspection it appears mine is reversed the right coil has black and yellow wire with a redstripe and goes to the #1 and 4 cylinders. Now heres another question i can get readings if i touch ground and the black or green but i get no reading if i touch the ground and the secondary/spark plug wires? what iam i doing wrong? and thank you for the help iam kinda learning this so bear with me. Point is i get no spark from my left coil i just want to know how to test a coil.

ps: they are dynatek coils not stock correct? and do need the battery hooked up for the test?

With the ohmmeter set to R x100 its suppose to be 23k ohms from lead to lead...

Thats stock specifications when measured between the 2 spark plug leads from same coil. (1&4) (2&3)

-Luke

With all wires dis-connected from the ignition coils, you should be able to measure with an ohm meter the primary and secondary windings.If the coil(s) do not read using a ohm meter, one or more may be bad.

Ignition coils are nothing more than transformers kicking up the pulsed 12 volts D.C. to approx 35000 volts.

The working environment is not the best due to high heat and vibration.

out of the manual....

Thanks for the responses guys it was indeed a bad coil.