Maintenance & Technical > KX500 Original
Idle Dies Down
tomasaki:
YZMIKE: I use Mobil 1 synthetic 2-stroke oil at 32:1. I live about an hour east of Pittsburgh at the base of the Laurel highlands.
GWCRIM: Does your spark plug stay clean?
Tom L.
Rick:
Dump the EG plug and switch to a BR8EVX before you monkey with anything else. I have never gotten a bike to run right with the EG, so I always switch out the plug first thing on new bikes.
Look at it this way, for less than $10, it's worth a try....
Good luck. Problems with our toys don't make for happy boys...
Rick
tomasaki:
Thanks Rick! I'll give it a try. What is different about the BR8EVX plug?
Tom L.
John:
I have had the very same problem with my 89. I have rejetted it until I actually had it to idle - but was way to lean, so back on square one.
This weekend I changed the piston and mounted a home made spacer kit (17 mm). The bike now idles.
This could however have been caused by the fact that there is now only one top head gasket instead of two. (The previous owner probably had some leaking problems...) The compression is higher and the bike is more responsive - loads of torque :) . I am going to take away the spacer once I have received the proper one from Moose. I will test and see if it was the higher compression or the spacer who did the trick. Moose deliveries to UK sucks so expect 6 weeks minimum...
/John
yzmike:
You can tell that these guys have experience in solving complicated problems, so truthfully. the only thing I can add is DEFINITLY use a premix oil that can run at 50 to 1, this alone should clean up the plug! I will buy moose spacer also. Keep writing about everthing you try.
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