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Oil Pressure Getting Close To 0

manage13

By manage13,
in Engines & Forced Induction

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manage13 Proficient

manage13

Posted
Posted

Hi everyone,

I did a quick search for “oil pressure” but as I am posting under major panic I didn’t come across anything that was relevant to my problem.

As I am currently running my motor in (trying to clock up 500km) I have notice oil pressure drop. I realize that a bit of drop is ok but today when I was at the lights I noticed that the pressure was getting awfully close to 0 on my oil pressure gauge and kept hovering below 2. As I pulled into my driveway I notice the gauge went right down to 0. I quickly switched the engine off to prevent any damage.

My question to the general populus here in FI section is: Is this a normal occurrence? Can anyone hazard a guess to what the problem might be?

Any help will be greatly appreciated.

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manage13 Proficient

manage13

Posted
  • Author
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is the "low oil pressure light" on?

No light isn't on.

get an aftermarket gauge.. 1/100th of the price of a new engine

You are right; I'm going to look in to getting one now

before you do anything else, get yourself a new oil pressure sender unit.

Do you believe my sender could be shot? If so I’ll get one from Nissan.

SECURITY Grand Master

SECURITY

Posted
Posted
Do you believe my sender could be shot? If so I’ll get one from Nissan.

if its an r32 then it very well could be.

it seems to be a common problem with them.

and as Waz has stated, getting an aftermarket gauge is best (but you'll need a sandwich plate etc). so go with the new sender unit first.

justin911 Grand Master

justin911

Posted
Posted

try spray the sender unit with that contact cleaner stuff..

after my engine was put bak in my car i had a similar thing.. when the car was hot the oil needle would sit on like 1psi at random times. the sender unit was all oily and decrepid looking.

WazR32GTSt Grand Master

WazR32GTSt

Posted
Posted

go have a read on www.aus300zx.com in the technical pages.. they have a big writeup about changing the OPS (oil pressure sender unit)

many of them changed their unit only to have it fail again after 6 months...

my setup:

gauge (ebay) comes with sender unit - $30-60 depending on what brand

sandwich plate - $25 from justjap

i mounted it in the glovebox. still can use the stock gauge for hte oil pressure warning light (which is accurate)

plus its WAY more accurate than the stock gauge

good investment me thinks

femno Grand Master

femno

Posted
Posted

Yeh i had the same problem and i shit myself, on idle after driving for a long time it would drop to just above 1 on the guage but the light didnt come on which was good.

But then i used different oil and it doesnt do it anymore haha, still gets low sometimes though.

I think most 32s have shotty oil pressure guages.

BTW new engine as well with 1,000km on it. New guage is on the agenda.

manage13 Proficient

manage13

Posted
  • Author
Posted

Thanks everyone for all your help.

I purchased an Autometer oil pressure gauge that I am going to install tomorrow. I'll let you all know if it works. Just one last question though, at what PSI should my oil pressure gauge be reading at idle?

manage13 Proficient

manage13

Posted
  • Author
Posted
When cold ive seen it around approx 70 psi at idle

When warm around approx 24-25 psi at idle

Thanks champ! I'll use that as a reference point

Please be aware, the standard nissan oil pressure guage reads in KG/cm^2 not PSi.

Yea, I have disconnected the standard one now and installing the Autometer which is in PSI. Thanks for the heads up though!

Cheers

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