symptoms of weak valve springs?

650ed wrote: You state "was riding it today in 5th gear I was letting the rpms climb higher and higher and all the sudden the power was gone then I let the throttle down a bit and it caught again."

That has nothing whatsoever to do with valve springs. Your clutch is slipping - no doubt about it.

Why do you keep using car oil if you have had problems with the clutch? You should be using oil that is JASO-MA compliant. Castol car oil is not. Take it from a guy who replaced the clutch in his KZ650 after using the new formula (years ago) Castrol 10W-40. If you keep using car oil you will continue to risk having clutch problems.

How did you adjust the clutch? Do you own a Kawasaki Service Manual for your KZ650? If not, what did you use as a guide regarding adjusting the clutch?

Tell what you did to "adjust the timing". Did you replace the points and condensers? What procedure did you use? Do you have a timing light and dwell meter? Replacing the points and condensers is part of normal maintenance, but it has nothing to do with the clutch slipping.

Your KZ650 should be very quick, but it will not be worth riding if it is not properly tuned and has a clutch that is properly adjusted and not slipping. Ed

blink543 wrote:

kaw-a-holic wrote: sounds more like a clutch issue to me. If you have a service manual it will give you service limits for both. Just out of curiosity, what are you running for oil?

10W 40 castrol conventional oil. I changed the clutch springs but not the friction plates because they were in spec.

kaw-a-holic wrote: Lets start with this. Do you have a service manual for your bike?[/quot8e]

Yeah a clymer

swest wrote: Keep it civil and at least abbreviate the F bombs. We understand your frustration. These are only opinions, not facts. Did you lose power or momentum. One could be fuel, the other could be clutch.
Steve

swest wrote: Look at your plugs. They tell a story. You havn't had the bike for long so a tune up is called for. If nothing else than to rule out things one by one. The valve adjustments are the most neglected parts of these bikes. Guys don't want to F with them because they take time, work and sometimes money. Once set, they will last for a few thousand miles or better. Once done you'll be glad you did, besides, like I always say, There's a certain satisfaction in knowing what's between your legs. :whistle:
Steve

swest wrote: Here ya go.
Steve

[/quo7te]

What does cold mean?