maztang (ryan)
+1y
make sure your intake is tight to the head and that none of the bolts have come loose. and that there are split washers on them to keep them from coming loose (there are coolant galleys that flow through the intake). if that is good, then there are a number of problems it could be. blown gasket, cracked or warped head, these little engines are notorious for head problems. hopefully it is something little man.