KTM 640 LC4 Engine won't rev above idle

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Panjo

Race Dog
Joined
Mar 11, 2010
Messages
1,033
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Location
Amsterdam NL
Bike
KTM 990 Adventure
Allo Dawgs, SO, Last week I took my LC4 for a ride, to loskop and back, with no issues. A week later, a chap comes round to test drive her and she gets halfway round the block and the engine dies. The prospective buyer says No thanks and leaves. Now, she starts easily enough, but idles very unevenly and as soon as you open the throttle to give it a blip, she dies. It feels like, when you twist the throttle gently that it's almost like an electronic type of rev imiter effect in place. The only thing that happened to the bike in the last week was it got a wash. Any ideas? FYI-The side stand switch was done long time ago.

Thanks, Panjo!
 
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