1998 kawasaki KLX 300 - Answered Questions & Fixed issues

You cant check the compression on those bikes due to the compression release on the exhaust cam. 75psi is ok. 64 to 125 psi due to the fluctuation caused by the release mechanism. Please dont say things that aint true. People that need help may tear down a goid engine due to your bad advice.

Hey Bently, sorry, there is no way to do anything to the transmission without tearing the engine down,,, DO NOT ride this atv again ,,you WILL cause more damage to the engine/transmission... It could/possibly be in the drive train...either way - take it to a qualified professional...

if your lucks good. try this. drain your oil. gas may have seep by piston. and the crank case has to much liquid in it. "BINGO" might be your lucky day !!!

check your throttle cables,may need lubrication,especially near carb linkages,clean &lubricate,no wd-40.

Several possibilities, including, throttle not returning to idle position due to bent or damaged cable from throttle to carburettor.This cable may also need lubricating with light (thin) oil. Idle setting on carb may need reducing. Finding the trouble should not cost a lot if you require someone else to dignose. If you have a work book for your vehicle (recomended), just go through the troubleshooting section for that problem. It could be an easy fix yourself at no cost.

replace the fuel line , remove tank and remove fuel tap and clean out ! might be a good idear to strip the carb too ! sounds like the bike not used enough and the fuel gone off ! 6mths and fuel is off and only good for cleaning dirt off parts !! P....

Plz Check Full Cable Condition. Sounds Broken From Throttle Handle To Carb

clean the air filter and carburetor and change the spark plug

pilot jet pluged up needs to be cleaned.

10W/40

head gasket gone, when apart check that the head is ok or wether it needs skimming otherwise this will keep happening

open the clucth cover and check if rod is installed

also how was it packed solid/friction/solid/friction

while open check clutch basket for ruff edges where solids plates ride should be smooth

over rich - if it does the same with no filter on try dropping the needle .if it's fine with no filter than try a free flowing one . float hight may be incorrect - double check where the float hight should be measured from. if carb has a diaphram in it make sure its correctly positioned it could be keeping the needle to high up. you could try a lower octane fuel.

of course it can and i miss my kawasaki KLX 300 a lot it is a great bike

If it's the one I'm thinking of -it has a vacuum operated shutoff valve on the tank. So your leaky -read stuck- needle and seat only leak when the engine is turning over.

Pull the carb loose and roll over and remove the float bowl. drop the float pin and remove the float and needle. Find the vacuum line to the fuel valve and **** it open to flush out the needle and seat. When the fuel runs clean, put the needle and float back on and open the fuel valve again. If the upside down carbs holds back the fuel- it's fixed and you can put it back together.

Sounds like the relay contacts are bent or welded closed or the solenoid is stuck. Check the solenoid first by removing the small wire from it and seeing if the starter stops turning. If it does not stop, the contacts in the solenoid are stuck closed.

make sure u have the right compression and after 5 years of not kicking it a 300 is probably pretty tough to kick. but u should be ok

Wath was before problems starting?
Details needed.

If the bike idles when you appy a little choke you may have a clogged carburator. The fuel that we get now is very unstable and gums up very quickly. I would suggest cleaning the carburator and flushing the fuel out of the fuel tank. the carb is very intricalte and should be serviced by a qualified technician.
I hope that this helps,
Steve

You need to take your carburetor off the motorcycle . disassemble , and clean it. Be sure to inspect the intake manifold for cracks and separation this could be a source of your issues. Pay close attention to the the slow jet and the slow jet passageway through the body of the carburetor. If the carburetor body passageways and the jets are open/clear,and you have the mixture settings set correctly (stock). Your idle problem should be solved.