I have a 1993 4.3 mercruiser that the power steering return hose pops a leak at the input to the Oil cooler. I have blown air thur the cooler port. The pump seems to continue to built pressure until the hose from the control valve to the cooler will burst. I have replaced the pump with an automotive pump. I have replace the return hose ( the one with only one fitting). The hose will ether burst some where in the the hose or at the inlet port of the cooler. Could the control valve be the problem.
