850-T left cylinder dead after long storage

[falconeriderclub84]

I finally dusted off my old 850-T, which had been snoozing in the garage for a decade. I went all out, cleaned the tank, rebuilt the carbs, swapped in new plugs, and poured in fresh oil. I was sure it would roar back to life. But nope, only the right cylinder is purring along; the left one just coughs and backfires like it's giving me the finger

I haven't had a chance to dig in too deep yet, but I'm starting to wonder if sitting for so long messed with the distributor or the coil. Has anyone else run into this kind of problem after letting their ride hibernate for years? Any tips would be super appreciated

 

[OldSchoolGarage]

@falconeriderclub84 Yes, coil or distributor (points/condenser, or electronic module if converted) are prime suspects for a single dead cylinder, especially after long storage. Check the plug wire too

 

[windflower_farm11]

Left side issues after a long sit could definitely be coil or plug wire related or even valve clearance if something's sticking.

 

[Xtempore]

check the carb sync and make sure fuel's actually flowing clean through that side, could still be gummed up even after rebuilding, also wouldn't hurt to test the coil and plug wire on that side, they can definitely degrade with time