Carb adjustment

[norman]

Hi all I have a 1997 xj600 diversion, when I bought it the previous owner said it had just had the carbs cleaned and set. I decided for my own piece of mind I'd put a new set of plugs in, when I took the plugs out 3 plugs where dark brown in colour where as No3 cylinder was still "white" , like new... also I have noticed that the exhaust coming from No3 cylinder is not getting hot, although the bike seams to run fine I would like to know if it is possible to richen the mixture on this one cylinder also has anyone got a decent picture of where the mixture screw is located. ( not used to these type of carbs)


Many thanks Norman from Somerset

[General Gman]

If the downpipe from no3 isn't getting hot, then that cylinder isn't firing. May be an issue with the plug cap / coil, so swap the coils over to see if the problem moves to another cylinder.

[m40man]

If you haven't already, don't mess with the mixture screw on that carb. It's unlikely to be the problem & may only make things worse.

It's much more likely to be fuel starvation as a result of a blocked jet, even though the carbs are believed cleaned by the former owner or his/her mechanic.