My truck wont stay started

[dpm540]

Hello (HELP)

I have a 1990 4x4 chevy p/u truck. Truck has never given me a problem. The truck starts and will stay running. When I put it into gear, it stalls. At this point, I've done a complete tune-up on the truck. Still, it starts but won't stay started. It is also sputtering. Any ideas?

[molhannah]

Change the fuel filter, if you haven't already done so. Next check the fuel pump. You might not be get enough fuel.