1987 xl600v "classic" no sparks

[Chuzwuza]

Hi folks
As the title suggests, i am not getting any output from any of the plugs (all new ones). Any ideas what would be a probable cause? i am a little thrown by the fact that both cylinders are affected. Ignition and kill switch are ok. surely if a HT lead, pulse generator or cdi were at fault i would still get a spark on the other pot????? Any help would be greatly appreciated.

many thanks,
Chuz.

[AIRWOLF]

Side stand switch ?

Unlikely both CDI's to fail at the same time.

[StumpyFingers]

Has it blown a Fuse?

[Chuzwuza]

Good morning all,
thanks for the replies chaps. I have checked all of the fuses which are good but will have a look at the sidestand switch. With the stand down does it just isolate the ignition or does it also isolate the starter preventing the engine from turning over?
cheers
Chuz.

[Chuzwuza]

just attempted to have a look at the sidestand switch and to my surprise there isnt one fitted to this model!!!!! It is the very earliest of transalps so i guess it was added to later models. back to the head scratching i guess.
Chuz

[Lutin]

I take it that the bike is turning over - just no sign of a spark, what so ever?

If the engine is spinning then, from the circuit diagram, there's only the ignition circuit to look at.

The supply to the CDIs is the Black / White wire from the Stop Switch.

The Green wire is Earth.

These are common to both CDIs, the specific wiring is as follows (second CDI in brackets) -

Black / Blue (Black / Yellow) - to ignition coils.

Blue and White pair (Yellow and White pair) - from the Pulse Generator Coils.

There's not a lot else really.

Hope that this is some help.

[Chuzwuza]

Many thanks Lutin,

Time to put my coffee cup down and get back to it. I will let you know how it goes.
Thanks again
Chuz.

By the way, you are correct about the motor turning over but no sparks at any plugs.

[Chuzwuza]

She's alive!!!!
After a day of inspecting wiring diagrams and the looms themselves i have found a corroded connector between the CDI's and the pulse generators. Although each cylinder has its own related system comprising of the CDI's and pulse gens, both systems do share a common connector which is hidden fairly well and i guess is rarely seen.
Many thanks for your help and advice guys, i'm off out for a ride.
Chuz.

[StumpyFingers]

I knew it was a simple fix, Hondas are after all bulletproof.