OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Briggs & Stratton Engines 4hp Briggs and Stratton Quattro

I am pretty sure it is coming backwards from the intake valve into the carby.
With the exception of the first time I took the head off there was no oil on top of the piston.

Compression was 100 psi.

The oil in the carby was in the throat of the carby when you look down with the air cleaner off. It also made its way to the diaphragm when I took it off.