This and bung some carburetor or fuel system cleaner in the tank.coaster wrote:Tried another new plug in it and the problem went away completely, now runs as smooth as silk. Worth trying before pulling anything apart.
It has taken a while but do all the easy cheap stuff first without getting all scientific and looking too deeply. Like putting new bearings in a transmission then learning it is the wheel bearings, as an example.
Other things I have found? Wasp's nest in the exhaust (blocked exhaust) and ant's nest in a flywheel. Not forgetting rats are good and chewing insulation on wires.