Question about 2001 KTM EXC 125

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No power band

Recently i have had to take the engine out of my ktm 125cc exc 2001 (as told by my local dealer) because my gear return spring snapped ever since it has been back in the bike i have had no power band. it gets to certain revs and then it bogs down. i have tryed the carb and it is all in order and has been cleaned does any1 know wat it myt be. i was thinkin timing all the pipes are ok and the spark plug is ok. how do u check the timing on one of these bikes.

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  • jamie_rose_8 Dec 09, 2008

    it sounds like there is too much feul goin in when hitting the higher revs

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  • 51 Answers

Fuel starvation problem possibly in the fuel line or filter and cap breather as well.not ignition likely

Posted on Dec 08, 2008

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Thanks for contacting FixYa with your inquiry.
Check externally for the obvious things first like a bent shift lever or lever re-installed in a position interfering with frame or something preventing engagement into 1st gear. I'm never that lucky.
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Are you sure you havent just kinked a hose somwhere. Maybe the crankcase breather pipe or even the fuel tank breather pipe.

If the timing was okay before you stripped it I really would double check all the pipes.

Also if you had the engine upside down when you were working on it perhaps some oils got on the plug so preventing you getting a decent spark

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