Oil pressure

Marto48 · May 27, 2021

2009 D40 YD25, just installed a set of gauges in the nav and was wondering what everyone’s oil pressure roughly sits at on idle and when driving at different rev ranges.
Idle at 800rpm I’m getting 17psi oil pressure and varies from 17 to 15. Is this normal or is it a sign of something failing, etc? Cheers!

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landmannnn · May 27, 2021

Oil pressure is very low at idle on most vehicles, one reason that manufactures never normally fit a gauge.
What are getting at normal speeds?

Marto48 · May 28, 2021

landmannnn said:
Oil pressure is very low at idle on most vehicles, one reason that manufactures never normally fit a gauge.
What are getting at normal speeds?

Car sits at 29psi oil pressure at 2200rpm 110km/hr

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landmannnn · May 28, 2021

That sounds like a problem, do you think your set up is accurate?

Marto48 · May 28, 2021

I was told these gauges are accurate. I’m running Penrite 10W40, would running this oil cause lower oil pressure and will going back to 5W40 help it?

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chris723 · May 28, 2021

A thinner oil will decrease oil pressure not increase it. Found this thread regarding oil pressure in which some values are stated but dont know if its the same engine as in the D40. No ideea if you can read the oil pressure threw OBD 2 port with a scanner

weak oil engine pressure

Hi all my navar is still running. 2002 model 40000miles, 10W40 engine oil I fixed an oil manometer few days ago this model http://www.ocoop.com/proddetail.asp?prod=TIM-OIL&cat=42 oil pressure value 2000rpm and 4000rpm must be 39 PSI (2000rpm) and 62 PSI (4000rpm) minimum (nissan statement)...

www.nissan-navara.net

Marto48 · May 28, 2021

Hm alright, what could be causing the low oil pressure? I’ve already replaced the timing chain components with the duplex kit from YD25.com.au, was already thinking switching the oil pump to the YD25.com.au upgraded pump also which might increase oil pressure aswell? Or what’s some other ways to tell what’s causing the lower pressure?

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chris723 · May 29, 2021

Low oil pressure can be caused by obstructed oil filter, low oil level, oil pump, worn engine bearings, oil pressure relief valve. Start easy check oil, change oil filter,oil pressure relief valve is something like over 200$ or go directly and change the oil pump.
Also found this thread with same problem

Low oil pressure.

I have just rebuilt my engine because it was damaged by low oil pressure. I completely rebuilt engine and put new oil pump but now when the my mechanic put it all back together it still has no more oil pressure. Could it be that some oil bypass valve is stuck open? If so where is it located?

www.nissan-navara.net

Marto48 · Jun 1, 2021

Have changed timing chain which required taking oil pump off so wonder if I’ve damaged the oil pressure nozzle as that other bloke had, also I have no oil pressure warnings showing on my dash so dunno if my gauge is actually accurate or not, it’s the oil pressure gauge from savage performance, gauge shows 6psi when car is turned off at all times. Actually interested in possibly getting another oil pressure gauge temporarily that’s known to be accurate and check the pressure. It’s very temperamental and fluctuates every time I drive it, after driving nearly 300k’s on the weekend it was showing that I had 39psi at 2200rpm.

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landmannnn · Jun 1, 2021

As you say, worth finding a method of measuring the pressure accurately.

Oil pressure

Marto48

landmannnn

Marto48

landmannnn

Marto48

chris723

weak oil engine pressure

Marto48

chris723

Low oil pressure.

Marto48

landmannnn

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