Fuel leaking from top of injector pump
 

The truck is a 2003. I have some fuel leaking from the top of the injector pump. I cant tell if it is come from the banjo area of the fuel line or from above that which seems to be a sending unit of some sort. Any ideas of what would cause the leak? should i just pull it all apart and clean and put it all back together and see how it works?

The thing you see on the drivers side back of the injection pump is the FCA (fuel control actuator) it adjusts rail pressure. It is sealed with a O-ring on the tip of it just inside the pump. If it is the banjo fitting then replace the copper washers between the bolt and fitting and the fitting and the pump, you may want to see if the banjo bolt is tight before you do anything. Most of the times I see a banjo fitting leaking is due to a loose bolt.

Be careful about tightening a banjo bolt. The bolt is hollow and can be easily twisted into. If the bolt is snug, replace the washers.