Maintenance & Technical > KX250 / KX125
new to two strokes and dirt - excessive smoke
gowen:
Hey nice TL1k! If it is smoking it is from your jetting being off, reguardless of your mixture, it won't smoke much. If you have your jetting set accordingly you should see little to NO smoke. Start at the main jet and make your way back. If you have a rich mainjet and try to adjust the pilot jet, it will not help much. I usally try to find the most crisp throttle responce. Great source for a start is FMF's webpage for a start, make sure you are on par. If you need more help on this, we have a few experts in this area.
hughes:
I agree with Gowen. But I would check my float height before you try and start to jet the engine/carb. I use Yamalube 2-R mixed at 32:1 in my 500 and do not have any oily stuff leaking out of the pipes. A 90 model bike I am sure the float height is going to be off from wear and tear. Let us know what you come up with.
gowen:
--- Quote from: hughes ---I agree with Gowen. But I would check my float height before you try and start to jet the engine/carb. I use Yamalube 2-R mixed at 32:1 in my 500 and do not have any oily stuff leaking out of the pipes. A 90 model bike I am sure the float height is going to be off from wear and tear. Let us know what you come up with.
--- End quote ---
:oops: oh yeah, check the float height first. Thanks hughes. :wink:
KXcam22:
Nice bike collection! What is the red one I can't quite tell. I'm another synthetic oil faithfull. Ater 35 years, my particular oil of choice for the last 20 is Belray MC-1 at 60:1. There are lots of great synthetic brands but the Belray has always been my choice. Others may run variuos mixes but I never run any engine I own richer than 50:1, and thats even in my weed whacker and chainsaw. Heck my yamaha outboard runs 100:1. Given that the bike is a 1990 I would suggest a compression check. That could explain the smoke and the poor bottom end power. Welcome to the site. cam.
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