Hi all, I've been experiencing loss of power on my 2009 fz6. It tends to feel feathery and clearly isn't delivering the power from all four cylinders. At higher speeds I can really fell it kicking in and out.

In an attempt to remedy this I have taken it to a garage, who thought it might be dodgy fuel but were unable to fix. I've taken the fuel right down over several tanks, changed all spark plugs, tried lost power products, injector cleaners and wyns dry fuel.

Any help would be gratefully received!

Had same problem. Resolved by replacing a deformed cylinder head gasket, and a worn out ignition switch.

Other than that, check that wiring connections are clean and solid.