03 wr450 running rough

hey,

i got a wr450 03 model and it starts fine but when im riding it just cruising along at about half revs it makes a sort of popping noise and lurches a bit. it goes hard when i give it a bit but when its cruising it just runs rough

any sugestions? thanx

Have a read through the 'FAQ' s on the top of page 1. It could just be the TPS issue. Try disconnecting the 'throttle position sensor' and see if that improves things.

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