2500 - 3500 rpm, flat spot

chuffboxcharlie

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Joined
Jan 14, 2013
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Wales
Hi all. Had this problem for a while now and cant seem to track it down. Bike is perfect apart from this big hole in the torque from 2500 - 3500. Lot worse when 2 up and loaded. No faults recorded.
Perfectly smooth and good mpg but still persists with this problem.
New plugs, filters, tappets done etc. Coils all checked 1 by 1 and fine.

I seem to remember reading on here a while ago something about Lambda sensor probs and taking them out and cleaning but cant find it on here now.

Any pointers will be greatly received.

Cheers
 


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