I have been working on aHonda HT 3813 for a while now. I got it running when i first got, it had sit for years under an old satellite dish, but it would miss and had low power, starter was draging This year i was going to get it going good. I pulled the engine replaced the timing belt and found the water pumps teeth were worn out replaced that. Replaced the starter, put all new belts on deck. I thought i was good to go. Went to start it and it would not run. I checked the compression and had 35psi at each cylinder. Put oil in the cylinders retested compression and no change. I took the valve cover off to check the valves to make sure they were moving, but one thing i noticed while rotating the engine with the valve cover off it was squirting gas out of the oil drain hole under the valve cover. I had the gas turned off but i guess the bowl was still full. How could that even happen. So my knowledge of engines is above average and i know with compression that low valves are either not sealing or blown head gasket, even if rings were worn i should have more compression than that. But how is gas squirting out of the oil drain hole in the head.