lector

Hello all. After a long term illness I am back on my feet. I let my 97 sl500 sit for 1 & 1/2 years. I did all the fluids before I parked it. To get it back up and running I had to put a new fuel pump in. Now I notice a sputter @ start up. I need to pump the gas to start it & I know with fuel injection you should not have to do that. Once she warms up she runs great. No indication lights come on while it's running. Any suggestions would be welcome.