No spark on one cylinder

  • Topper
  • Topic Author
  • Offline
  • Platinum Member
More
10 Apr 2011 10:51 #443762 by Topper
No spark on one cylinder was created by Topper
I pulled my '88 KZ305 out of winter storage a week or so ago and am trying to chase down a few problems that seem to have shown up over the winter.

The latest is that I don't have any spark on the right side of the bike. I had it running and rode it around the yard last week. This weekend it wouldn't start up and it appears that I have no spark on the right cylinder.

It's not the plug, I swapped the plugs around and on the left side I've got spark and on the right none.

Is the most likely culprit a bad coil?

Permanent and perpetual noob.

1979 KZ750 Twin
2009 Kawasaki Versys

Please Log in or Create an account to join the conversation.

More
10 Apr 2011 11:09 - 13 Feb 2013 11:24 #443768 by martin_csr
Replied by martin_csr on topic -
.
Last edit: 13 Feb 2013 11:24 by martin_csr.

Please Log in or Create an account to join the conversation.

  • TeK9iNe
  • Offline
  • User
  • What did you do!?!
More
10 Apr 2011 13:27 #443809 by TeK9iNe
Replied by TeK9iNe on topic No spark on one cylinder
Make sure your getting full power to the (all) coils, and like martin said, all connections from ignition to plugs should be clean and tight.

the ignition systems not a very big deal...

B)

Motorcycle Shop Owner/Operator

79 Kawie Z1000 LTD
81 Kawie Z1000 CSR
83 Honda VT750C A
85 Kawie GPZ900 A2
86 Zukie GS1150 EG
93 Yamie XV1100 E
Lucky to have rolled many old bikes through my doors ;)

Please Log in or Create an account to join the conversation.

  • Topper
  • Topic Author
  • Offline
  • Platinum Member
More
13 Apr 2011 21:34 #444482 by Topper
Replied by Topper on topic No spark on one cylinder
Anybody want to help a noob?

I'm trying to test the primary and secondary resistance on my coils and my manual is not making any sense to me.

Primary:
  1. Disconnect ignition coil leads
  2. Set the ohmmeter to the x1 ohm range, and connect the ohmmeter leads to the leads from one of the ignition coils
Then my reading is supposed to be 3.6-5.4 ohms.

Ok, first problem, my multimeter doesn't have a x1 ohm range. I've got 2k - 2000k. Where do I set it? Or do I need a better multimeter?

Second problem, when they say "leads from one of the ignition coils" I don't really know what they're talking about. For each coil I have one wire running from the wiring harness to the coil and then the spark plug wire running out the back of the coil.

When I remove the lead running to the coil, there's a little tab connector there. Where am I supposed to connect the multimeter?

Secondary:
  1. Disconect spark plug caps from the spark plugs, and pull the spark plug leads off the caps.
  2. Set the ohmmeter to the x 1k range, and connect one ohmmeter lead to the spark plug lead and the other ohmmeter lead to the yellow/red lead from the ignition coil.
Then my reading is supposed to be 11-17 k ohms

Again, I don't have a x 1k range on my multimeter. Also, no yellow/red lead coming from the coil. I have leads running to the coils, but on one coil it's black/white and if memory serves the other is black/red.

I'm totally stumped on where to connect the leads in both tests and unsure if my multimeter is even up to this job.

Permanent and perpetual noob.

1979 KZ750 Twin
2009 Kawasaki Versys

Please Log in or Create an account to join the conversation.

More
13 Apr 2011 22:27 #444492 by MFolks
Replied by MFolks on topic No spark on one cylinder
Reading the ohm rating on ignition coils is easy, now the shop manual will list meter settings you may not have, but if your meter goes to 200, you'll still be able to read the ohms.

On most meters, the 200 is the maximum it will read, not the mimimum. You might have to buy a meter with useable ranges to be able to do checks on your bike. Radio Shack Stores sell a good, inexpensive meter along with Home Depot(look in the electrical section) and Lowes.

Disconnect any wires going to the coils as they can affect the readings and put the meter leads on the primary(small wires side) and then read between the secondary side(where the sparklug leads go)it's usually a spike the sparkplug leads go into.

1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)

Please Log in or Create an account to join the conversation.

  • Motor Head
  • Offline
  • User
  • FIX UP YOUR BIKE RIGHT AND CHEAP
More
13 Apr 2011 22:34 #444494 by Motor Head
Replied by Motor Head on topic No spark on one cylinder
Since you have 2 separate coils, and have swapped the plugs already, try swapping the coils. This will show you if you have a bad coil.
Tell us which meter you have, Google will pull up a reference and then you may be better advised on setting the scale. Is it Digital or Analog? Etc.
U-Tube has videos on how to test the coils and other areas of your electrical as well.

1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...

Please Log in or Create an account to join the conversation.

  • Topper
  • Topic Author
  • Offline
  • Platinum Member
More
13 Apr 2011 23:34 #444510 by Topper
Replied by Topper on topic No spark on one cylinder
So since I have two separate coils does this whole primary winding and secondary winding thing in the manual not really apply to my bike?

Here's a shot of the front of my multimeter. Will this do this job? If so what setting should I use and what results should I be hoping for when I test the coil?

Permanent and perpetual noob.

1979 KZ750 Twin
2009 Kawasaki Versys
Attachments:

Please Log in or Create an account to join the conversation.

  • Motor Head
  • Offline
  • User
  • FIX UP YOUR BIKE RIGHT AND CHEAP
More
13 Apr 2011 23:39 #444512 by Motor Head
Replied by Motor Head on topic No spark on one cylinder
It still applies, with that meter set it to 2000 OHM. That is in a clockwise direction of your dial, the last OHM position.
Try swapping around the 2 coils. It will be a better test, it actually will test the coil under load, that's what you really want to do. It is a "Bench Test" type of thing. Swap them and see if it gets spark on the suspected coil.

1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...

Please Log in or Create an account to join the conversation.

  • wireman
  • Offline
  • User
  • The most interesting prick in the world
More
13 Apr 2011 23:56 #444516 by wireman
Replied by wireman on topic No spark on one cylinder
see if you have 12v going to the coil in question,if you have 12v going to it but nothing coming out id just stick another coil on there B)

posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.

Please Log in or Create an account to join the conversation.

  • Topper
  • Topic Author
  • Offline
  • Platinum Member
More
14 Apr 2011 00:23 #444526 by Topper
Replied by Topper on topic No spark on one cylinder

wireman wrote: see if you have 12v going to the coil in question


Remember I'm a noob ;) How would I verify I've got 12v going to the coil? Lick the lead like a 9v battery? ;p

Permanent and perpetual noob.

1979 KZ750 Twin
2009 Kawasaki Versys

Please Log in or Create an account to join the conversation.

  • Motor Head
  • Offline
  • User
  • FIX UP YOUR BIKE RIGHT AND CHEAP
More
14 Apr 2011 00:30 - 14 Apr 2011 00:33 #444528 by Motor Head
Replied by Motor Head on topic No spark on one cylinder
Take that Meter, put the red lead onto the red/yellow wire at the coil, and the black lead from the meter to the engine or frame= ground. Turn the key on. Oh set the meter to 12vdc.
If you would swap the 2 coils around you will be testing for power at both coils, also that the ignitor and pick up coils function. If you swap, and the coil that did work now doesn't, then more trouble shooting with the meter. But first swap coils, and check for spark.

1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...
Last edit: 14 Apr 2011 00:33 by Motor Head.

Please Log in or Create an account to join the conversation.

More
14 Apr 2011 07:03 #444548 by Patton
Replied by Patton on topic No spark on one cylinder
Couldn't find a 1988 KZ305 wiring diagram, so here's my guess about the ignition system and where to attach the two ohmmeter test probes to measure the resistance of each coil.

This is a SWAG for sure, and might be incorrect, but won't hurt to try.

Am uncertain what the ohm reading should be on the particular coils at hand, but both coils should be about the same resistance.

Good Fortune! :)


1973 Z1
KZ900 LTD
Attachments:

Please Log in or Create an account to join the conversation.

Powered by Kunena Forum