HELP!! XJ600 1994 CDI

lawsonn · L Plate Warrior Joined: 11 Oct 2013 Karma :

Hi im new to the site.
i have a xj600 diversion 94.

Huge problem.. its running on 1 and 4 cylinder but not 2 and 3.
loom has been chopped about. i have changed the grey wire incase it was broken.

Need to make sure if the wires are in the right places on the cdi.

Anyone have any pics of the plug with the wires so i can make sure its all right.

and also should i be getting voltage from the coil through the grey wire?

thanks

Fizzer Thou · World Chat Champion Joined: 06 Aug 2011 Karma :

It may well be the coil or the pickup.If there is only the one pickup for the one pulse per rev,then see if by switching the coils the fault moves with the switchover.
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lawsonn · L Plate Warrior Joined: 11 Oct 2013 Karma :

May sound silly but what's the pickup? i have 12v from the red/white once you turn the key on both coils. But i tryed swapping things round and didn't make any difference.

I tryed putting the grey onto the other coil and testing for spark but didnt have anything. even though i replaced the hole wire. but... when i tested the coil that wasnt working it still wasnt working so im a bit lost as once all back 1&4 run but again nothing from 2&3

J.M. · World Chat Champion Joined: 27 Mar 2011 Karma :

The pickup is a sensor which monitors the rotation of the crank. Every time that a tab passes the sensor, it will trigger and the plugs will spark.
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lawsonn · L Plate Warrior Joined: 11 Oct 2013 Karma :

oh yes thanks well its not that as it runs but not on 2&3 so not a clue.

mgh0 · Scooby Slapper Joined: 19 Sep 2011 Karma :

https://diversionclub.proboards.com/threads/recent

These chaps are usually helpful
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Robby · Dirty Old Man Joined: 16 May 2002 Karma :

Has the problem recently started or did you buy the bike with this problem?

Before delving down into the pickup coils, consider the ignition coils. There are two coils, each with two HT leads coming off. One coil handles cylinders 1+4, the other handles 2+3. Try swapping the coils and their respective HT leads. If the problem moves, you have a suspect coils or LT wiring.

Coils are cheap. I just bought a new pair for my XJ650 for about £35 on ebay. Shame it uses the silly design where the HT leads are moulded in.

Coils also need to have a good power supply. Make sure the (low tension) wires are properly connected and that the connectors are clean - a little corrosion here can make a big difference. The coils probably earth through the frame, so make sure that the frame mounting points are clean and corrosion free.

lawsonn · L Plate Warrior Joined: 11 Oct 2013 Karma :

lawsonn · L Plate Warrior Joined: 11 Oct 2013 Karma :

Right an update.
New coil still dont work. so i have been over everything and last thing is the cdi on the bike. so.... i pulled it apart and it has a rather big black spot and melted so.. new cdi. when and picked up a cdi from a 98 xj600 and wouldnt run with that.

Is there any differance in cdi unit from my 94 to the 98 etc? thanks