1979 GS550 ~ No Spark?

[RVolpe]

I'm stuck. I pulled my '79 GS550 out of storage; tried starting it but couldn't get it to run. It would fire on a blast of starting fluid but wouldn't run. I pulled the tank and carbs. Carbs definately needed cleaning. I flushed the tank. Reassembled all but now, have no spark. I've checked the wiring and all seems to be in order.
Any ideas on what to look for?
Thanks,
Ralph

[almarconi]

Let see..

1. Battery charged, whats the voltage?
2. What is the voltage at the coils?
3. Plugs clean and not fouled
4. Wiring to ignitor connected, fuses ok?

If it will fire on starter fluid then the ignition is working. Your carbs will need to be taken apart and cleaned.

[Raven457]

The fuse box and battery would be the obvious place to start, so I'm going to guess you've been there already. Next you might double check your connections to the coils under the tank area to make sure those harnesses didn't come loose while you were taking things apart.

My 850GL did something similar when I was going through and cleaning all the harnesses and wire ends. After finishing up, I had no spark - turns out I'd left one of the harnesses on my igniter/CDI box not quite connected.

[Nessism]

Did you check the obvious things like the plugs and points?

[JordansCycles]

when spark went out on my 1980 gs 550, i just changed out the igniter box and it fired right up.

[Nessism]

when spark went out on my 1980 gs 550, i just changed out the igniter box and it fired right up.

That's great but what would you do for a bike with a points ignition like the OP has?