Hi All at iboats, Well, I bought a nice 82 Astroglass 140 bass boat with an 83 Mariner 50ELPT ser.# 6367670 motor. All cylinders test at 100 psi with #3 being 105. Normally, the motor runs fine. However, at times, I have to pump the fuel line bulb to keep it running when it starts to die. It...