Misfire/No Idle

[nathanielbishopv]

I recently purchased a 83' GL1100 I Replaced Battery & Starter Solenoid and the bike fired right up .I noticed a missfire on one of the cylinders and replaced that plug (didn't fix it).Thinking it could be bad gas i filled the tank the seafom and 93 octaine gas (no noticeable effect).After mutiple attempts I've learned that it will not idle less than 1000 Rpm and occasionally will rev to 2000 with out assistance.To keep it form dieing a twist of the throttle is required,also any movement of the choke other than pulled all the way will kill the bike.When running One of the Four "intake" tubes dosent get hot. Any advice on how to diagnose this issuse? Also are there screw(s) to drain the carborator(s) Located externally or will I have to remove the chrome covers.
Thanks in advance Guys

[geraldm]

Start with a compression test
and go from there