1984, KZ1000P, had set for some time, after I purchase the bike, which will be a daily rider, I changed the tires, brakes and multiple other parts, I have started the bike and it backfires, sputters, and runs rough. an increase in throttle doesn't clean anything up. The spark plugs look good, they are new, wires are good. I am thinking that I have a fuel problem, hoses are new, and I have used Seafoam in the fuel to hopefully clean up the easy parts. The bike has the original air box, so I would need to remove it to get to the carbs. Sometimes the starter button works and at other times it doesn't, I have cleaned the switch with contact cleaner. Any advise would be appreciated.
Pulled the carburetor and started the cleaning process. I found that the idle nets were completely plugged, but this was only after I removed the plugs that were covering the jets. So are the idle jets not used? Were the plugged intentionally? See photos