The combustion chamber oil problem has no pretty much gone after I used Bigted's idea however still nothing more than the odd pop of two when you try to start the engine. No more oil is entering the throat of the carby.
I should have noted earlier the starter rope sometimes gets difficult to pull like something is providing resistence. The starter itself is fine as i tried it on another mower.
Compression is ok so it should fire more with fuel in the plughole but it didnt. Still thinking........
