Absolutely something can happen. The diaphragm can dry out and crack. When you exposed it to the ethanol laced junk that passes as gas these days could have easily degraded the diaphragm and/or the valves. Get a new pump. Don’t mess around. With a bad diaphragm, you could be pumping fuel into your crankcase. Not what you want. In fact, if the oil smells like gas, you should change the oil no matter how new it may be.
Last edited by Dragsix; 05/22/2020 11:41 PM.
