Respect, @andywood, you even get Shimano pedals to need grease. (A feat I never managed. I threw mine away, even though they were still functioning perfectly.)I also had a clicking sound today.
At first I thought it was the rear derailleur.
But I realised it was coming at the same time on each pedal stroke.
Pedaled one leg to ascertain it was on the left side.
Pedaled in and out of the saddle to check it wasn't the saddle or seatpost.
Sprayed some "oil in cleaner" between the BB and crank arms to check it wasn't grime in there.
Sprayed some "silicon spray" on the cleats and metal pedal contact points to check it wasn't a pedal/cleat interface problem.
Rode in regular shoes to reconfirm this.
Checked the play in the pedal shaft. A bit more on the left side was enough to convince me that it was a bearings issue.
I was all set on new pedals (for Shimano MTB pedals, which are relatively cheap, it's better to just buy new pedals rather than buy parts which I do for Shimano Dura Ace road pedals).
As a last chance saloon, I took the pedals off, cleaned off the grit, greased up the thread, and put them back in.
Hey Presto! Click gone!
Well greased parts make this rockin' word go round!
Andy View attachment 31673