"I have a 1996 48 hp Johnson a
"I have a 1996 48 hp Johnson and I am having trouble with a pulsing throttle. The engine revs then hesitates revs...hesitates. I took it out today and ran a timing light and it appears to be firing on both cylinders during the rev cycles. I found the engine would run pretty good if I pushed really hard on the primer bulb but I didn't feel like I was adding that much fuel, just pressure. So now I believe it is a fuel system problem. The owner before me ran it without using the VRO2 pump with oil and just mixed, which I like. The VRO2 pump is not converted as my manual states by plugging the intake and replacing the "plates" which the oil would be injected into. Can any one offer advice on where to start?"
"I have a 1996 48 hp Johnson and I am having trouble with a pulsing throttle. The engine revs then hesitates revs...hesitates. I took it out today and ran a timing light and it appears to be firing on both cylinders during the rev cycles. I found the engine would run pretty good if I pushed really hard on the primer bulb but I didn't feel like I was adding that much fuel, just pressure. So now I believe it is a fuel system problem. The owner before me ran it without using the VRO2 pump with oil and just mixed, which I like. The VRO2 pump is not converted as my manual states by plugging the intake and replacing the "plates" which the oil would be injected into. Can any one offer advice on where to start?"