Topic: One cold cylinder

[Williamsd]

I took the bike to work today (about a 1/2 hour ride) and it seemed to be running fine:  good acceleration and a smooth idle.
When I parked it I checked the pipes and found that #2 was only just warm.
A dab of spit on all of the other pipes sizzled of but #2 took about 2 seconds to evaporate.

I have recently trimed the ignition wires because of a miss on #3 and I thought I did a good job of it.
Question:  is it possible to lose one side of the coil?

Have to get it home to do more testing

Dave
1982 CB650SC

[Dusthawk]

nope, not possible. It is in the wire, cap, plug or engine on that cyl. Double check the trim on that wire and see if you have good connection in the cap where it meets the wire.

Peace, Jeff

[Philly550K1]

is #2 the "reference" carb on that bike, i.e. do the other three have slide adjusters but not that one?  anyway, whether it does or not, it could well be carb-sync related, i reckon....

jc

[Williamsd]

Problem solved... but not sure exactly where the problem was.
I redid the connections and changed the plug.
Possibly the routing of the wire was putting tension on the lead.

Thanks for the replies.