Maintenance & Technical > KX500 Original

Bike tries to grenade itself.

<< < (2/5) > >>

gowen:
When the bike is running super lean, it will rev itself to death and have no power, unlike WFO (which has full power). I agree with a serious air leak, do not ride until fixed or you your '83 will have serious damage.

BDI:
 If you turn your gas off and let the bike run out of gas It will do the same thing and the kill switch will not stop It because the air fuel ratio Is lean and running on detinanatio like a deisel It needs no spark thats why the kill swith Is useless. The best way to stop It Is to hold both brakes firmly and let the clutch out

Hillclimb#42:
 Sounds like you also may have damage to the cylinder. Cheaper to look. When they lean out like that, they are getting way hot and the cylinder is hot enough to keep it running. I agree that the slide is sticking or cable is pinched. Throttle should be "snappy". Pull it back and it should snap closed. Dirt in the throttle tube, or anything can cause it to hang. I also agree that air leaks and running out of gas causes the crazy runnin you describe. Usually though, when you are running out of gas, you run out. It usally dies with some pep, or pukes. The most important thing is get it fixed. Nobody needs to be on a K5 with a sticky slide, or any other possibilty. Nothing good can happen riding that bike. Good luck! Post your findings. My bet is the slide. Maybe someone should start a poll.

BDI:
 Take your bike turn off the gas sit ther and let the bike idle tell It runs out of gas If your jetting is right as the float bowl emties the bike will rev to the moon and you cant do any thing about It with the kill switch. go try It if your bike does not rev up as it runs out of fuel your bike Is to fat This is a old tunig trick to find out how close your jetting Is on the pilot.your bike will do the same thing if the floats are sticking shut. as the float bowl emties out the engine will rev up I like to put the bike against a wall with the bike in gear so when the engine starts to rev I can kill the engine by letting out the clutch. This Is a trick rick peterson tought me. rick own's rpm he makes the Ice cube cylinder for the thumpers. I would star by cleaning the carb If your throttle Is sticking that will be obviuse. To look for vacume leaks use starting fluid with engine running spray starting fluid aroud the carb and intake if you have any vacume leaks the engines idle will change noticably when you spray starting fluid on it. vacume leaks usally do not come and go, sticking floats do. clean the carb and chech your throttle cable for bussted strandes up close to the throttle housing.

booneylander:
Wow sooo much info in just one day, thanks a bunch guys for all the opinions/options.

I think my first step will be to take the carb apart and see if there's anything obvious. If I still have the same problem, the next step will be to find air leaks.

I had a look and the rubber boot between the carb and the reed is pretty badly cracked so I'm thinking that might be a source of air leaking, so I'll see if there's anything I can do to seal it up temporarily and find out if that's the problem.

Navigation

[0] Message Index

[#] Next page

[*] Previous page