Dutch944

Hi all,

Since i took my car out off its wintersleep and refurbished my rear-axle, it seems the oil pressure is just amazingly high. When i start it, it goes immediately to the max of the meter on the dash but when it's completely warm it's about 2.8 bars when stationair. The other thing is that my oilstick (is it called oilstick?) is coming out during driving. So i thought, maybe there is a lot of leakage in the cilinders into the carter. So i tried a leak-downtest but all cilinders had a leakage of 10%. I already talked to a lot of people about this and everyone said i dont have to worry about it but I still do. In my opinion high oil pressure isnt bad but i'm not really an expert.

PS, i also cleaned the oil filler tube and put on some new gaskets. And i forgot to tell that sometimes it's spitting oil out of the oilstick pipe..

Thanks in advance!
Bas Henneman
The Netherlands

Fintro11

Do you have oil in the air filter box? Or notice your going through a lot of oil?

Hollywood D

Mine doesn't push the dipstick out or spit oil out of it, but my pressure behaves the same as yours. Pegged when cold and about 2.5 when warm and idling.

Fintro11

I found a thread on here about the normal pressure for cold / warm idle. It showed the proper pressure's at cold / warm I think 4-5 is normal when cold? and it should be 2-3 when warm? I will try find it again.

Hollywood D

Yes, I've also researched the same thing on here and about everyone was at that consensus.

Dutch944

I think its about 1500km a liter, but i still have a leak at the oil pressure sender so its not really accurate, and there is no oil in the filterbox but just a little bit of oil in the ehh.. I dont what its called, its the thing where the throttle cable is attached to.

Fintro11

Your aos seals could be starting to go, if your getting oil in the throttle body. Mine has got really bad i have a little pool of oil in the air filter box and 100+ km i go through a quart of oil >.<

Dutch944

Aos seals? My english is pretty well for a dutch guy but i dont know all the words

Fintro11

Air Oil Separator


You will need two O rings, and one for the oil cap

Dutch944

I already replaced those.. Together with the oilstickseals.. And i also cleaned it, maybe i can try soaking it in benzine or diesel for a night to get all the dirt out!

Dutch944

Anyone got any other ideas for my problem?..

Hollywood D

Did you overfill it with oil? That will cause excess pressure.

StoogeMoe

High oil pressure wouldn't cause your dipstick to come out. You probably have a worn or missing seal on the dipstick itself.

Your description of your oil pressure numbers sound about right to me.

Dutch944

Its at about 3/4 full (so about 250cc is "missing") so i didnt overfill it, i think. A already replaced the dipstickseals, the one on the dipstick itself and also the dipstickholderseals. Any other ideas? I was thinking about the piston rings being worn out and giving a lot of extra pressure, but according to the leakdown test, that is not the case. So maybe the AOS isnt doing what its supposed to do?

OntarioTurbo

My oil pressure at start up is at 5 and then after it is fully up to temp it goes down to about 3. On a really hot summer day in traffic it might get down to 2-2.5. I run 20W50 oils as well. What weight of oil are you using?

Perhaps your oil pressure relief spool is sticking a bit as well. Have you replaced the oil cooler seals lately? If you have, perhaps the spool is not aligned properly when you reinstalled it. I used a special tool (borrowed) to ensure everything stayed in alignment when bolting it back together.