If you want to rule out the fuel pump look at your O2 sensor and see if it is going lean. Also look at your MAP for vacuum and pressure. I had a situation when I came in this board where the car layed over and I ended up having a check valve in the line leading to the MAP sensor. I checked everything and chased my tail for over a month thinking it was everything from a bad fuel pump to a bad MAF and MAP sensors. I changed the sensors and bought a fuel pump assembly and ended up being a .25 cent T that I needed. I didn't have the Torque app at the time or anything like that. I used a fuel pressure setup and an oil pressure sending unit screwed in where the gauge went on the fuel pressure tester and connected the gauge inside the cabin and used it for a couple of days to see how my pressure was. All that was for nothing Bill ended up spotting the check valve and when I tried it again it was working again so it wasn't the filter I thought it was. I think what you will find is the plugs are bad, but you will be able to tell a lot by playing with the Torque app.Originally Posted by rkm
Jeff
