Is it possible to remove my VRO2 pump and replace it with a standard fuel pump? The oil side of the pump was disconnected by previous owner and the engine ran fine. However, I am now experiencing an engine "stumble" as I am running the engine. I have changed the plugs and used a portable tank with new bulb and lines to see if there was a problem with my onboard tank setup. The engine still stumbled or missed. I was thinking the VRO2 pump might be at fault. Any ideas?
