Your needles or seats are probably worn or dirty. You would be probably do yourself a favor and rebuild the carbs. Buy the kits, but only replace what you have too. I have been told that the mains and pilot jets in some kits are suspect. Clean the carbs in a good carb cleaner solution, you can use plain white vinegar to finish the clean up and the brass parts will look new. Don't leave them in the vinegar too long, just long enough to clean them to near new.
While you're doing that, take the tank off and clean it out too. Check for rust, rust residue can get inbetween the needle or block a jet or passageway in the carb. Replace you hoses too if they are old, it is a cheap insurance to take at this time. If you can fit one in, put an inline fuel filter from one of your local car parts stores. Get the smallest one you can, stay away from the glass ones though. There are several old articles here on cleaning the tank if you find rust in there. Don't forget to take your finger and wipe the top of the inside of the tank near the filler hole. See if you get rust on your finger or if it feels rough and pitted. Tanks rust above where the gas is, that is why it is important to store a bike with a full tank of gas for winter as it won't rust where the gas touches it.
What type of petcock do you have? Is it "On", "Off" & "Res"? If it isn't you have vacuum controlled type and the diaphragm or other parts are bad. (sorry didn't note what your bike has for a stock petcock).
Keep us posted.
Post edited by: KZ_Rage, at: 2006/07/02 10:41
1979 KZ1000E1 SOLD!
1984 KZ550F2 SOLD!
2006 ZG1000A6F (Totaled)
2001 ZRX1200R (Sold)
2001 Sprint 955i ST (daily rider)
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