I've got a new-to-me 1982 GS750T, bought non-running and sitting for a few years with gas in the carbs, pretty gummed up. I cleaned the carbs per the Mikuni_BS_CV guide, adjusted the valves to spec, replaced the air filter with a new (lightly oiled) K&N stock replacement, and sealed the airbox. The bike now starts with choke wide open, but only the pipes from cylinders 1 and 4 (outside 2) get hot, and it needs full choke to run. Fuel is gravity-fed with a funnel while my tank de-rusts, and I blocked off the petcock vacuum port. Spark on both 2 and 3 looks good. I also swapped the wires around and both of the coils seem to be working. Haven't checked compression yet, need an adapter for my tester.
I can pull the carbs again and see if I missed a blocked tube somewhere, but on both carbs? It's a PITA and doesn't make much sense. I didn't see anything in the guide on screw adjustments except for the mix screw, which I set to the standard 2.5 turns on all 4. I also ran in the idle adjust in to make sure they were all open, not sure how much is open enough and figured I could tune it once they were running. I'm a little concerned about the hoses from airbox to carb, but don't see any obvious gaps. Maybe will try spraying some starter fluid on them tomorrow to check for leaks.
Any other ideas?
Tim
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