i just built a new motor for my truck. i have 400/400 injectors in. when ever i open it up my oil pressure gauge drops way low and throws the light any ideas??
Yes they're hydraulic lifters.Not second guessing anybody, but did you check bearing clearances when you built the motor, all of them, not just rod bearings and main bearings.
In my experiance of building motors (no Powerstrokes, but bearings are bearings), with a new oil pump (which if you did not replace on a new motor build, I do get to call you a dumbass), the biggest reason for low oil pressure is excessive bearing clearance.
Not sure if our motors have hydraulic lifters or not, but that is another concern, but just like oil pumps, they should also be brand new.
Not trying to be an a$$. You know way more than I do about these motors. They are probably right about the cooler. Just passing on what I consider valuable info.yes all the bearing clearances were good, and no did not put a new pump on, since the oil pressure was good before the rebuild. im thinking the prob is the cooler is not letting the oil flow threw fast enough, and the oil pressure sensor is on the gen 3 housing and since the extra supply line is restricted from the cooler the light is thrown cause the hpop is using more oil then supplied now. the light did not come out before the cooler was added. so i just need to find a new way to cool my oil