I bought a 1979 BMW R100T.
When warmed up the engine will ping like heck under any real acceleration.
Bike shows 24k miles on clock.
I've checked timing and found it retarded and bumped it to spec.
Still pings.
I've used the highest octaine fuel around with additives but still pings.
What the heck could be going on.
Runs great except for the pinging.
Got any suggustions?