My wifes 2002 Kawi Ninja 500R has been running rough for a while now, but she hardly rides it so it has not become much of an issue until now.
What it's doing is:
Weird idle upon startup (sometimes higher revs and sometimes lower/stalls)
Throttle does not seem responsive at lower RPM's
Just seems to generally run on the rougher side
Just bought a new battery for it and will test it tonight.
Are there any ways to test for a vacuum leak?
Could it be the Carbs just need cleaning?
Possibly need to replace spark plugs?
I have done a fair amount of work on my own bike (03 GSX-R 750) but don't have any experience with carbureted engines so I am not sure where to begin troubleshooting.
Any help would be greatly appreciated