When you turn on the key with the engine cover off on the left front of motor looking at it from the back ,the silver tank in the front you should here the pump should come on for 5 sec, if not then probably relay that runs the med pressure pump. You can use a tire gauge on the schrader valve and see if it is getting 35-40 psi to go to the injectors, BECAREFULL!!!!!!!!! fuel could spray when putting the tire gauge on the valve. i will be online for a little working on a quote, so i may be able to help you.