Running on 1 cylinder, new harness?

cwilliams · 01-13-2009

I found it was a bad spark plug

unit5alive · 01-14-2009

You need to tell us the year ,model , and what engine it has, to get a little more help.

cwilliams · 01-14-2009

RCW · 01-14-2009

If you are running on one cylinder it is likely either a pulsing coil (they are replaced as a pair), an ignition coil, the valves are loose on the missing cylinder, or you have a bad plug.

The wiring harness on these is such that if power is to one coil, it will also be to the other coil.

I really recommend you purchase the service and repair manual. These rigs are just about bulletproof if they are properly maintained. But, without the book it is easy to nuke the Igniter by grounding an excited wire by accident, or by grinding on the starter with the plug wires disconnected.

The cost of a new Igniter could buy you many service and repair manuals.

cwilliams · 01-14-2009

Interestingly enough and thank you for your reply, I checked the pickup coils and had trouble getting a reading, and then tried a little more only to see a lot of corrosion on the terminals, so maybe my test of the igniter is wrong and a failed pickup coil is stopping the second coil from sparking, either way I will test it tomorrow after cleaning the terminals. I really need to replace the entire harness, but I did solidly repair the many cuts I had so those are good, so if this fixes it and things are good, I will then go back and do the harness. I would be thrilled if it wasn't the coil. Thanks for the help I will let you know.

I am still amazed that this machine ran so well just one one cylinder so it will be nice to see it running on 2!

01-13-2009	#1 (permalink)
cwilliams Still On The Kickstand Join Date: Jan 2009 Posts: 32	Bad plug I found it was a bad spark plug Last edited by cwilliams : 05-02-2009 at 11:55 AM.

01-14-2009	#2 (permalink)
unit5alive Mule 610 pilot BTK Intermediate Join Date: Aug 2008 Location: Latrobe Pa. Posts: 126	You need to tell us the year ,model , and what engine it has, to get a little more help. __________________ 07 610camo,roof,bumpers,,tach,spdo,flr mat,benz silent rider,hitch,turn signals,winch,stereo 4 spkrs

01-14-2009	#3 (permalink)
cwilliams Still On The Kickstand Join Date: Jan 2009 Posts: 32	1997 Last edited by cwilliams : 05-02-2009 at 11:53 AM.

01-14-2009	#4 (permalink)
RCW Way Too Much Free Time BTK Expert Join Date: Nov 2007 Location: Oregon, Chile, Alberta, Texas Posts: 1,452	If you are running on one cylinder it is likely either a pulsing coil (they are replaced as a pair), an ignition coil, the valves are loose on the missing cylinder, or you have a bad plug. The wiring harness on these is such that if power is to one coil, it will also be to the other coil. I really recommend you purchase the service and repair manual. These rigs are just about bulletproof if they are properly maintained. But, without the book it is easy to nuke the Igniter by grounding an excited wire by accident, or by grinding on the starter with the plug wires disconnected. The cost of a new Igniter could buy you many service and repair manuals. __________________ 2008 3010 Trans4X4 Diesel Mule 2008 JD XUV 850 Diesel 1979 XS650 Yamaha New DR-Z400S

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01-14-2009	#5 (permalink)
cwilliams Still On The Kickstand Join Date: Jan 2009 Posts: 32	Interestingly enough and thank you for your reply, I checked the pickup coils and had trouble getting a reading, and then tried a little more only to see a lot of corrosion on the terminals, so maybe my test of the igniter is wrong and a failed pickup coil is stopping the second coil from sparking, either way I will test it tomorrow after cleaning the terminals. I really need to replace the entire harness, but I did solidly repair the many cuts I had so those are good, so if this fixes it and things are good, I will then go back and do the harness. I would be thrilled if it wasn't the coil. Thanks for the help I will let you know. I am still amazed that this machine ran so well just one one cylinder so it will be nice to see it running on 2!

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