I have a 2005 Tundra with the 4.7 and it has 100,000 miles. It has two DTC's P0172 and P0175. I have tested the O2 sensors and all four are functioning correctly within specs. I don't really think it is one of those anyway since the truck started running rich on the the right and left bank at the same time, so I am looking for something that is common to both, but I'm still checking everything to make sure nothing is missed. There are no mechanical problems, the engine runs fine. I and going to check for a stuck open injector in the morning by pulling the plugs and checking them. I just cleaned the MAF sensor, and I want to check the fuel pressure but I don't know how to do that on this truck. How do I check the fuel pressure and what should it be? Thanks,