Kawasaki Motorcycle Forums banner
1 - 1 of 1 Posts

·
Registered
Joined
·
1,512 Posts
As I understand all bikes with a vacuum petcock make these sounds time to time. It's the release of vacuum created as the gas drains into the carbs. Perfectly normal. Your tank technically isn't air tight and all of mine have done it, some vent designs are just louder than others.

36 miles to the gallon is low but not unheard of. 50 is in line with what you should be expecting on this bike. The worst I've had on my 500 (pillion, highway riding) was 41-42 mpg, and the best was 56-58 if the throttle was absolutely babied. All bikes are different and some 500 riders claim 75-80 mpg (lol!) so remember to take it all with a grain of salt.

A can of seafoam and a filter cleaning, along with properly inflated tires (35-40 PSI) will probably improve your MPG. Enjoy. :smile:
 
1 - 1 of 1 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top