[1993 GSX600F only firing on 2 cylinders]

All fixed now

thanks for the help guys 

[1993 GSX600F only firing on 2 cylinders]

18 minutes ago, vizman said:

If your coil went down, the plugs are probably fluffed on those two cylinders, have you tried cleaning/replacing them?

Yes I did that.

[1993 GSX600F only firing on 2 cylinders]

I’ve done that. I’ve just checked the pick up  again. The manual says it should read between 135-200 ohms . Mine is reading 164 so that’s ok. 

[1993 GSX600F only firing on 2 cylinders]

18 minutes ago, Upshotknothole said:

Had this happen with a teakettle 750, if the lead that goes to the tach is grounding out, the coil that it’s hooked to won’t fire. Everything will test fine, but you’re not gonna get spark. Also try grabbing one of the old coils and a plug and check both leads to the coils with that. Easier than trying to plug and unplug the coils when they’re bolted to the frame. 

The coils are already unbolted and off the bike. Only one of the coils don’t work. I wired the good coil into the bad side and didn’t get any spark. I run a multimeter from each end of the wire and the wire is good. 

[1993 GSX600F only firing on 2 cylinders]

No I’ve managed to get a second hand one cheap so hopefully once I fit it and the new coils that will sort it . I will test for spark before I bolt everything back together .

 

[1993 GSX600F only firing on 2 cylinders]

I have already done that . The wiring is fine.

[1993 GSX600F only firing on 2 cylinders]

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[1993 GSX600F only firing on 2 cylinders]

Hi guys my bike is only firing on 2 cylinders. I have tested the coils and one was bad and I have replaced the pair but it still isn’t producing spark. I have tested the wiring and it has the live like it should have but still no spark. I’m thinking the coil isn’t getting any pulse from the cdi telling it to fire. Any ideas if it could be anything else? 
I have checked the battery and that’s fine. Thanks for any help.