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I'm new to this form and have a couple of my bikes I have questions on.

First bike is my 2003 KTM 450 SX. It runs great and I can run it down the road throttle and on trails no problem without it dying on me. But when I jump it, it spits, sputters and dies. So when I land I need to pop the clutch to get it started again. Any idea what this could be?

second question is on my 2003 KTM 125 sx. When I'm riding it it tends to surge around 3/4 to full throttle. But when I let off it will kinda go back to normal. I've cleaned the carb, new air cleaner, fresh rebuild, just can't figure it out.

any help would be appreciated. I am a marine mechanic so I usually can figure this kind of stuff out but I've been stuck on these two bikes for awhile. Thanks 

Edited by cclapper199

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