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"R" model shuts off.... sounds bad

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when riding my bike (esp when cold) at times if i give it a little throttle it shuts off instantly..... engine doesn't sound good when this happens either, kinda like the piston comes to a sudden stop instead of if you shut it off it coasts to a stop.

usually happens with little to no load on the engine and low rpm's.

bike is a 2003 KLX400R with a 3x3 mod, and full rs3 exhaust. i put a MCCT in it last week and found that the cam chain is stretched, i bought the bike used from Arizona and have no idea what jets are it it but it runs great. i do see the head pipe glowing red at idle at night though.

any idea's :)

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do you still have the kick stand safety switch installed ???

other than that we need more info ... like ... comp test

or valve clearance

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What is the jetting? Sounds way lean. If it was from a high elevaton in AZ and waz jetted for it the bike would be very lean in FL. You need to confirm jetting to see where it is at.

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do you still have the kick stand safety switch installed ???

the KLX400R does not have the kick stand switch, it is like an "E"

check the jetting, drz400s_guy is right.

have fun,

j.

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i'll pull it apart this weekend and check the jetting. i was kinda thinking that the cam chain being stretched was allowing some sort of overlap between the intake and exhaust? it's like it fires when the piston is coming up and just BAM.... stops dead in it's tracks.

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