Originally Posted by
Retro Grouch
How is your front shift cable routed? I had that once and it turned out to be the shift cable brushing the crank arm.
THIS....
The free end of the Front Derailleur cable was brushing the crank arm as it passed.
I bent the crank arm to miss it ! 8-)
Are you sure the click is in time with the crank position.
Is the timing of the click effected by gear selection?
Can you single leg pedal and attempt to see it it is a pedal?