Strange oil pressure after I frame

[Yauchout]

(12-16-2024 )Nater1977 Wrote:  It sounds like to me the bypass valve is opening up like you’re saying and I did shim the oil pump spring I used 10 dimes, but maybe for some reason that’s why it’s too high. When I installed the pump I cut the one shim like you did, )that is a bad design) and then I put the shims right back in place.(the ones pump to block) Funny thing is yesterday when I was idling it. It was sitting right around 40 psi the whole time. It went up to 60 drop back down and went back up to 40. seems like the valve is bypassing and then closing like you are describing. It is a brand new valve I put in for the update And also, I discovered yesterday I have a seal leak between the motor and the transmission housing. So I’m gonna tackle that job as well this week. This truck is just new to me and I knew I had to do a rebuild when I bought it.
Yes, there is a quite a few little things odds and ends I have to take care of before I start going down a rabbit hole.

Just a thought i could be wrong but you used dimes on a new style pump they may be two small and when they sit in the plunger they could be sideways being higher one one side then thew other on the nub that is in the center causing higher spring pressure most people use 6 pennies on a new style pump although i wouldn't recommend pennies on a new style pump after my experience


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