D Appeldorn

yes i know, this is asked many times.

before i'm putting in new oil i'd a question to solve.

whe i start the car it hase 3 bar pressure 43psi. ( aftermarked europeean)
it should stay between 2 and 4 bar 30-60 psi.

now it stay's that way till the engine becomes on temp 90"C (194 F +/-)

than the oilpressure dropes down. below 1 bar 14psi stationairy iddel

pulled the valvecovers off today an one side it looks ok (pasengerside) to me the other looks foamy (driver side) and i cleaned it.
and i blow with compressed air the valves rod's and oil ports.
turned the rods ( exept for 3 that would'nt turn?) for clearence.

and blow air trough the temp sender hole.

i'd rus a 15w40 diesel miniral oil to clean the engine and go to valvoline raceing oil 20w50.
it is a car only using in the summer.
And i am asuming that it is the wrong oil i used.
it does'nt use oil at all, and it is clear/normal no creamy white collor.
my valve vent passengerside works (it rattels when idling)



Now my question.

did i overlook something? or do i need to drop the oilpan out?



if it would be the oilpump i am assuming that it stationairly gif me no pressure to.

thanks,

Derek

D Appeldorn

could the pressure drop because bad rocker arms valve's and springs?

i changed the oil to valvoline vr 20w50 (racingoil) and at colt start it puts al the right numbers.
But when it heats up it drops.

what is the couse of this? i vind it strange that it works cold at 3 a 4 bar and after heating up want to drop below 2 even 1.

engine noks a bit, thinking of a bearing or pushrod or valve lifter, but it seem to go away when heating up.

if it would be the pump, why do'nt i get low readings at the start.

my valves seem to get oil,

need a good thought, i'm thinking to get it to a enginerebuilder so he can giff my engine a tuneup.

and before i spend a mount of money on searche labour, i want to know a few things what it could proberly be.

thanks
\

Yellowstatue

14 PSI is fine at warm idle...the dash oil light doesn't come on until the pressure is below 3 PSI...which I think is a little low but GM knows better...

D Appeldorn

ok thanks, find it a little low to.

it's scarry to see the oil sink below 1 bar.

and dificult to see 3 psi is 0.2 bar.

i go next week to a enginerebuilder to check my nocking sound.
i'm thinking it's a pushrod or valve.
so he can look and hear it.

i do not know the past of my 350 and hate to see it getting worse.