I have a 2008 kx85 and its been revving really high in gear and i gotta shift up a few times to lose it but it always comes back on a down shift. but lately i got a whistling sound

scott rimmer

• 162 Answers
• Posted on Mar 05, 2009

SOURCE: zx6r 1999 G2 starts fine when up to temp throttle

i would try to map the fuel system as it sounds like its totally out? ive never heard of it affecting it that much? also try replacing air filters.

SOURCE: kawasaki gpz 1000 rx 1987 model

Running well at high revs would indicate that all the fuel and air it needs are getting to the engine and you also have a good spark. Probably no problem with air and fuel filter ( if fitted) or sparkplugs.

Running hot, and bad idling are signs of a lean air fuel mixture. The engine is probably not getting enough fuel at low revs.

This could be caused by an air leak between the carburettors and the engine. Check that the vacuum line to the fuel tap is properly secured at both ends. It is behind the fuel line at the tap.

Get a a short length of hollow plastic tube and use it like a stethascope - put one end to your ear and move the other end around your carburettor mounts with your engine revs as low as you can get, and listen for any sucking noises that would indicate a leak. Look for cracks in the rubber inlets.

The other possibility is that there is an internal blockage in the idling jets or idling fuel circuit. This is where dirt tends to lodge because the jet dimensions and passageways are very fine - The high speed jets are much bigger and dirt often just passes straight through.

Try a little bit of choke while the engine is warm to see if you get a stronger low speed response. If so that would point to an internal blockage.

SOURCE: 2006 kawasaki kx85, only shifts to first gear and

Your dogs are grounded out. You are going to need your trans overhauled.

SOURCE: Riding along the road engine slowly came to a

I think you could have an intermitant open circuit inside your battery. One of the links joining the cells is loose and makes contact sometimes and not other times. Replacing the battery could fix the problem. There appears to be notthing amiss in your charging system.

SOURCE: I have a 1978 KZ750

The lower fork is bent. It is impossible to just look at a fork and see the bend. Wierd that you can't see the bend, but it IS there.
Check the shat that the fork slides on to be sure it is not bent also. Bent shafts do not happen often but they do happen. The bad fork should slide freely on the shaft. Also, put the shaft on a flat surface. Roll it and look for any gaps between the table and the shaft. If a gap shows the shaft is bent.

I checked Babbitt's and it looks like they have forks and such for your bike. You might want to get fresh points, condensor, engine seals and gaskets, etc.. Please rate my answer. Thanks.
www.babbittsonline.com/pages/parts/viewbybrand/default.aspx