So i called texas speed talked to a guy in tech department and he seem pretty certain that my problem is the mounting service for the oil pump is warped told me to put a thin bead of gray silicone on it and let it dry and then torque it down. He seems to think that's what my problem is.anyone ever heard of this thanks again
I have a 2008 GMC Sierra 5.3J engine code I ordered a Texas speed delete kit also put a new mailing M295 oil pump new pick up tube o ring when I first start the truck it'll have a little over 55 pounds of oil pressure once I started driving it and it warmed up. It dropped to 20 and slowly kept creeping down. And then it came down close to zero where I could hear the valve making noise.so i turned the truck off for a second restarted it and it was back to showing roughly 20 pounds of oil pressure but then it dropped again slowly any ideas? The only thing I did not change or block off was that pressure relief valve and the oil pan I also used one of those mailing girdles for the pick up tube and only used the top bolt. I didn't put a bolt in the backside. I thought using that mailing girdle that it allows you to only use one bolt. Could that be my issue? It did look like it seated flat.
Thanks for the help this is my first post i did have the ecm tune done to turn off afm.
also the truck has always had good oil pressure previously on readon for afm delete is because a failed lifter and the oil pump oring I used was felpro