running on 3 cyls

[edd-short]

CBX1000A 1979/80
My 1st run since recommissioning , around 25miles, pulls strongly, stops OK, no vibration to speak of, I thinks carbs need balancing but other than that I was happy with the shake down run.
Went home to adjusted the clutch a little, started her up for another ride but she only fired-up on 3 cylinders (4,5 & 6).
I’ve just replaced the coils, leads, plugs & caps but she is reluctant to start and when she does, again its only on firing on 4,5&6 (and if I touch the throttle it dies instantly)
At this moment in time I have; a good battery, strong spark, clean fuel supply and good compression,
Am I missing something obvious? I’m reluctant to run the engine again for fear of creating damage.
Any advice would be very welcome.

Regards
Edd.

[steve murdoch icoa #5322]

Sorry to say Edd but it sounds like a carb problem.
Probably clogged pilot jets.
Even with it running decent for a while if these tiny orifices aren't completely clean they can easily get clogged.
Some tips for removal. viewtopic.php?t=5507

imho, the best money spent on these brutes is the Mike Nixon carb cleaning manual.
http://www.motorcycleproject.com/text/booknook.html#1

[edd-short]

Originally before touching the carbs I looked up as many as possible of the forum Q&As and still ended-up buying Mikes carb book, vapour cleaned them followed by a sonic bath, all new jets, seals etc., cleaned the tank inside, I even filtered the fuel, I will be gutted If a 25 mile run has created a blockage, but Hey-Ho back to the tool box.

[Goss]

Hello Edd,

If you start her up on choke it should run on all 6, the idle jets will only really cause problems below 2,500 rpm.

Regards

Goss