I installed a new Walbro Fuel Pump after having issues with my car. Several people had suggested that it would cure my problem. I put the pump in today. After I finished installing it, I primed it a couple times by turn the key to the ON position. I started the car, and it started up just great. I let it idle for about 30 seconds and rev’ed the engine to make sure it wasn’t going to stall. About five minutes later I was planning on leaving so I thought I let the car idle while so it was warmed up. This was the second time starting it. As I turned around to walk inside I heard the idle drop, and it was ready to stall… it then jumped back up. So I got in the car and hit the gas a little to see if it would steady. I let it stay around 2000 RPM and it wasn’t consistent power. What gives? Any ideas? I highly doubt its the fuel pump.
is it turbo maybe you got a leak in the piping. how are the spark plugs.