engine noise

i ran my kz 650 low on oil and now when i throttle up it makes a bad rapping sound, any ideas on what it could be

Nothing good, that's for sure

Could be rod or main bearings, wrist pins, or piston slap, but piston slap usually changes with engine temp.

Running it with insufficient oil damages all the above, plus cam and cam bearings, transmission gears and bearings, etc. Pretty much just trashes the motor.

What Steell said...could be ugly.
How "Low" DID you run it,btw?...and for how long?
How much oil did you have to put back in to top it off?

if you havent allready,, drain the oil and pull the filter apart,, look for metal if you see the stuff in there it is a sure sign you got trouble on the way

i only ran it for like 2 miles i was on my way home. i am pretty sure the motor is shot. does anyone know where i can buy a new or rebuilt motor,and for how much

deathcoleman wrote:

i ran my kz 650 low on oil and now when i throttle up it makes a bad rapping sound, any ideas on what it could be

If it's a metallic sounding knock, it's a rod bearing.

deathcoleman wrote:

i only ran it for like 2 miles i was on my way home. i am pretty sure the motor is shot. does anyone know where i can buy a new or rebuilt motor,and for how much

The dismantlers might be the first place to look.






www.50highwaycycle.com/


www.tiaromotorcyclewreckers.com/Nos%20Kawasaki.htm

www.fullthrottlecycles.com/_vti_bin/shtml.exe/index.html