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Discussion Starter · #1 ·
remidies for the black gunk running down the inside of my plastic mid pipe and end of pipe on my KX500: to rich?? new pipe end?

suggestions for fixing or at least minimizing..
I have cleaned it very good and yet about 3 good rides later blahhhh again..
Thanks,
DJ
 

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Definitely change packing. Try not to put more premix fuel in the tank than what you think you will use that ride...the fuel that's left after the ride may have the oil sinking to the bottom and cause the bike to run too rich while it burns the thicker mixture at the bottom of the tank, causing the oil gunk to build up in your pipe. The flipside is that you're then running a little lean for the rest of the tank. If you're burning down to a quarter tank and then filling it back up every ride, then you should be good to go. Use full synthetic as it burns cleaner.
 

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as for mid pipe, get some pipe clamps (like billet banshee ones) or make your own out of radiator hose and worm clamps.
 
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