Originally Posted by Diesel911

Try getting one of those 1 liter spare fuel cans or an old type gallon paint thinner can full of diesel Fuel put it under the hood between the back of the Head light and the front of the fender well (you might need to remove the Window Washer tank).

Run a separate hose from that to the plastic filter and get on the hand primer and pump until the air is out of the system and start it and go for a drive. That bypasses the fuel lines all the way back to the fuel tank fuel tank screen and any issues with your fuel tank vent. If things improve you know you have a problem from the fender well back to and including the fuel tank.