Ok, so I finally got a fuel pressure gauge and mounted it today to my schrader valve. My problem was originally that the car would stumble and die when first starting it up, and when I would try to start it back up for a second time it would fire right up like nothing had ever happend. I was told it was the IAC or a possible leeky fuel injector. So, at idle the gauge reads 34psi, and then when I shut off the car it goes up to almost 40psi. I checked it about 10-20 minuts later and it was at almost 50psi. Then I checked it again about 3 hours later and it was at 10psi. Is this normal? Also I did change the IAC and that did nothing to improve start-up. I just looked at the gauge five minuts ago(12:15am) and it read 0psi. Is that at all right?Any help is greatly appreciated!