There ya go , now if you had a clear line hook up , you can find that by seeing the air flowing with the fuel to the pump and reduce it down to the problem area by hooking up the clear line inline at every fitting going back toward the tank , if the air never clears up , then you know the problem is in the tank , what I try to tell every tech I work with , use the Troubleshooting trees , they were designed to save you time , and follow the order they use. dont use any short cuts unless the problem is right in front of you. it easy to make clear line by getting them at a hobby shop or even Home Depot. three good tools , clear line , restriction gauge , and fuel press. gauge every tech or anyone that troubleshoots should have one