1982 GS750E 2&4 pipes cold?

[Delbert24]

It runs but hard to start and 2&4 pipes are cold.
Where should I start?
Any pointers appreciated.
Thanks,
Del

[Guest]

If your getting spark and you are getting gas to the suspect cylinders I'd have to say you need to synchronize your carbs.

[Delbert24]

I am thinking coil or igniter?

[Guest]

One coil fires 1&4 and the other 2&3. Are you getting spark?

[Planecrazy]

To add to the previous question, are the plug wires running to the correct cylinders? Maybe one of the coils is bad or disconnected AND the wiring is incorrect to the cylinders.

Oh, one more thing ... when I added performance coils and wires to my 550 it would intermittently run on only three cylinders. It took a LOT of investigative work before I finally realized that the "coil end" of the spark plug wire to the cylinder that was not firing was incorrectly seated (read "not pushed all the way on to the coil") even though it looked just fine. After pulling it off and re-seating it the problem was solved and the motor ran perfectly.

Hope this helps!

[Dave8338]

If it's wired correctly (ie. spark where and when it should) it's most likely fuel related...carbs, o-rings, air leaks. Have you cleaned the carbs yet? Check for air leaks everywhere?