29-07-16, 01:45 PM
Thinking about it, it might be that the loud cylinder is pinking.
Take a look at the plugs, there may be one that looks as if it's running lean.
Either way, it's probably worth checking the adjustment on the slow-running mixture screws.
Take a look at the plugs, there may be one that looks as if it's running lean.
Either way, it's probably worth checking the adjustment on the slow-running mixture screws.