briggs and stratton vanguard daihatsu 3 cyl gas engine

After checking the compression on both cylinders the right side now had 90psi and the left side now had 150psi. Engine fired right up this time no problem and ran good however it still smoked. Torqued everything to factory specs and installed back into machine. I checked the sealing of the valves by putting carb cleaner in the head on top of a paper towel. There was also a lot of carbon buildup on the top of the piston on both sides and in the head which I cleaned off with carb cleaner and a fine scrub pad. I removed the heads and installed all new gaskets and torqued all to factory specs. There seemed to be leakage around the head gasket on the right side (low compression side). I checked the compression and the right side of the motor now had 120 psi and the left side had 145. I checked the fuel shutoff valve on the carb and it was operational. The oil had about 50 hrs on it straight 30wt. I drained the oil and it was slightly overfilled and came out a grey color and seemed as though it had gas in it. The battery had a full charge and the starter was checked good according to the service manual. Then after sitting for a while the engine would not start. The engine started having problems first with smoking and it smelled like oil if it was not run every day. The engine ran well for abut 200 hrs with routine maintenance. Looking at the engine the right side was 170 psi and the front was 160. At that time I adjusted the valves according to the service manual and did a compression test. I cleaned all the mice nests from the cooling fins as well as servicing it. The carb was shot and needed replacement when I purchased it.

I bought this on a piece of equipment last May with 2674 Hrs. Hello all I hope someone can help me out here.

Briggs and stratton vanguard daihatsu 3 cyl gas engine