dirt racer

hey,
i own a 03 kx125 in very great condition i just recently had a rebuild on the carborator done and im just not getting the power i should it bogs down way to much in 1st in all gears realy even woth speed and ive tryed every thing nothing has worked i didn't just do the carborator rebuild i done other stuff.and on jumps im just not cleary the ones i should be and its because of loss of power can any one help me.

wr250f95

when was the last time you did a top end? are you sure your not running too rich?

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"LIFE'S JOURNEY IS NOT TO ARRIVE AT THE GRAVE SAFELY IN A WELL PRESERVED BODY, BUT RATHER TO SKID IN SIDEWAYS, TOTALLY WORN OUT, SHOUTING'...HOLY S**T... WHAT A RIDE!"

this, is why I ride.

tjscott2012

is it hard to start, backfires?

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wr250f95

if it backfires its running lean or its something in the electrical, but if it backfires because of being lean it would run better than normal.
engine builders jet to make it run a little lean for better power.

__________________
"LIFE'S JOURNEY IS NOT TO ARRIVE AT THE GRAVE SAFELY IN A WELL PRESERVED BODY, BUT RATHER TO SKID IN SIDEWAYS, TOTALLY WORN OUT, SHOUTING'...HOLY S**T... WHAT A RIDE!"

this, is why I ride.

tjscott2012

idk about that wr, gscx told me lean engines can bog, then i learned firsthand he was right, remember that yzf450 i showed you? it had an exhaust and a bunch of other stuff and had never been jetted, it was running leaner than a bitch, and it bogs and is extremely irresponsive, so i asked if it backfired because if it is running lean, it can be suffering performance and power delivery wise

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wr250f95

if its too lean yes, but a bike will run a bit faster when its jetted a tad leaner than its supposed too, a little something I learned from reading posts by a dude named Ron Hamp, he built a few of the engines that you see in professional supercross.

__________________
"LIFE'S JOURNEY IS NOT TO ARRIVE AT THE GRAVE SAFELY IN A WELL PRESERVED BODY, BUT RATHER TO SKID IN SIDEWAYS, TOTALLY WORN OUT, SHOUTING'...HOLY S**T... WHAT A RIDE!"

this, is why I ride.

tjscott2012

yeah, of course, but im assuming the scenario has made the bike to be too lean, not just a tad

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wr250f95

running too rich will cause worse running conditions than running lean will, running lean will cause damage to an engine, especially on a 2stroke.

__________________
"LIFE'S JOURNEY IS NOT TO ARRIVE AT THE GRAVE SAFELY IN A WELL PRESERVED BODY, BUT RATHER TO SKID IN SIDEWAYS, TOTALLY WORN OUT, SHOUTING'...HOLY S**T... WHAT A RIDE!"

this, is why I ride.

dirt racer

ya ive redone the pistons the hole thing it was fine win i took it apart but went a head and done it im running oktane i think thats the name

wr250f95

well something ive learned that if something starts happening after you took it apart you probably caused it, go back in and check the cylinder for scaring.

__________________
"LIFE'S JOURNEY IS NOT TO ARRIVE AT THE GRAVE SAFELY IN A WELL PRESERVED BODY, BUT RATHER TO SKID IN SIDEWAYS, TOTALLY WORN OUT, SHOUTING'...HOLY S**T... WHAT A RIDE!"

this, is why I ride.