The 1990 kz1000p I'm on stayed running a little rough in roanoke when I pulled in, but seemed alright in the morning. I made a long ride to next to Nashville to my brother's house. Now the bike was really running rough. I got weak spark on a couple cylinders so I tested the ignition system and replaced the plugs and wires based on the numbers. Sounds much better but I'm getting no fuel into cylinder 2. Tore down the carbs all the way except can't find a good screwdriver to fit the pilot jet and don't have a compressor to blow everything out. My brother's already shipped his stuff back to New England, so I just have the tools I brought/ can find and I'm on foot. Precious few metric shops around, I left a message with one that opens tomorrow morning. Any ideas? I gotta leave town soon.
Lacking air I would use cans of carb cleaner sprayed into all the jets and tubes
Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn
There was a good amount of rust in the bowls that had just started to pull free. I called Andrew at Nashville Motorcycle Repair where I had gotten the wire and caps and he got me in the next day (today). He replaced a wonky jet and cleaned and blew them out for me for a song and a dance. Just got back to the bike to reassemble and install them. Wish me luck. If this isn't it i I'll move on to the next thing thing in my flow chart (stuck Valve, probably).
My cop bike exhibited a few of the symptoms you describe, and I pulled my hair out replacing plug wires, plugs, igniter, carbs, etc. but it turned out to be the air injection system.
Might be a good thing to check to check since it's free to just hook the inlets together.
2016 Yamaha FJR1300ES
1982 GPz750 R1
1974 Kawasaki H1
1976 Kawasaki KZ400
1979 Yamaha XS650 cafe'
2001 Yamaha YZ426
1981 Honda XR200 stroked in an '89 CR125 chassis
1967 Triumph GT6
"If you didn't build it, it's not really yours"
Well, air injection system was upside down and blocked off, but boy did she run like shit when I put it back to how it was supposed to be. After new plug wires and caps, cleaning the carbs, cleaning all of the frame grounds and taking the carbs off again to fix the float levels and put Teflon tape around the valve seats. She seems to be back to normal. Leaving Nashville in the morning to go down 40, wish me luck.