I have a 1989 50hp evinrude with vro it runs perfectly at low revs but when I open it up it accelerates and then dies it keeps doing this unless I squeeze the petrol primer bulb.It also works if I raise the petrol tank to gravity feed the fuel.I have checked for fuel leaks, restrictions,blockages etc but I can find no problems.I have even stripped the vro pump but it all looks fine.As I premix my oil and fuel anyway can I fit a normal fuel pump,if so what type?, or is there another solution.
