84 FJ1100 Dusted off After 10 yrs, Help

[ct7088]

Check the resistance of the spark plug caps they unscrew from the plug wires. Compare #4 with the others. Have you adjusted the carbs to get the butterflies to open at the same time? Back the idle screw out until the butterflies close completely then adjust the linkage (1 and 2 first then 3 and 4). That may bring the cold cylinder into action and make the carb sync easier.

[Sparky84]

Check the resistance of the spark plug caps they unscrew from the plug wires. Compare #4 with the others. Have you adjusted the carbs to get the butterflies to open at the same time? Back the idle screw out until the butterflies close completely then adjust the linkage (1 and 2 first then 3 and 4). That may bring the cold cylinder into action and make the carb sync easier.

I'll test caps on the weekend, butterflies were checked.
Yes I still have to sync carbs.

Just waiting for some terrible days