gen 1 rough running at 6000 rpm

[gnm]

any ideas what its likely to be?  runs fine up to approx 6000 then just starts to misfire, let throttle  off slightly and it goes fine. sometimes runs fine but theres no telling when its going to do it. replaced exup cables, cleaned and lubed valve about 2000 miles ago after 7000 message on tacho.

[Falcon 269]

Start by checking that nothing is obstructing the air intake and then report back.

[gnm]

thanks, found the problem. the 7000 fault came up again this morning so took the cover off to check valve working ok and found one of the new cable liners had slid down the inner cable and melted itself round the pulley. back to normal now thanks again for your reply.

[Falcon 269]

Good, thanks for the feedback.