Not Ranked
Sounds like unburnt gases seeing some oxygen in that leak you may have found.
Timing possibly, but then that wouldn't just affect one side.
" the continuing combustion of unburned cylinder charge after it is pushed out of the engine. It is COMBUSTION flame. The combustion continues and even accelerates once the exhaust charge starts expanding and dissipating into the atmosphere, where it encounters additional oxygen to help it along."
Could be a little of both timing and mixture.
Usually this stuff happens on the downshift or deceleration.
Whaler
|