Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Hi there, thanks for using Justanswer.
So oil pressure was 19psi when the engine was warm and idling?
are you still there?
Let me know when you return and we will continue. thanks
im here, yes, 19psi warm idle, raises w rpm
So what is your main concern and I will be glad to help.
low oil pressure w warm engine at idle
vehicle had fairly low miles
and your concern is that 19psi is too low?
is the oil light on when idling?
customer has owned car for a while and just started experiencing problem
Honestly, this is not really a cause for concern if it nots dropping dangerously low at idle. Like 5 psi
vehicle did not use to do symptom...so something is different
If it was scary low at idle I would be concerned because usually when that happens on these engines, its because the inner timing cover seal is bad
is there a check to confirn that diagnosis before just tearing into it?
and the inner timing cover seal, where is located. do u mean the case cover gasket?
let me see if it shows it on the service manual brb
not really a chack for
classic symptoms for it are extremely low pressure at idle that jumps up upon acceleration and turns the light off
This is the 4.0 right?
of course the manual shows every o-ring behind the stinking cover, but not the gasket I am talking about.
when you remove the inner timing cover theres a steel cover piece on the right hand side when you purchase the entire cover
thats the one that causes the problem
so behind chains there is another cover that has to come off, is it available seperate or w whole cover only?
I was trying to explain the inner timing gasket that causes it.
it's part of the whole cover.
yes, it's part of the rear timing case
ALOT of work
ok, how sure are you?
that's why i don't recommend it unless the pressure continues to drop dangerously low
i have seen 5 psi kind of pressures in most cases
does that cause the pressure to bleed internally somewhere?
no, thats why it's so hard to detect
Your customer doesn't have any timing chain noise or issues do they?
no noise or issues, if it is a gasket.seal gone/going bad....but doesnt bleed the pressure internally somewhere...why does it cause low oil pressure?
just trying to understand
sorry got tied up I'm back.
i have only seen this twice, both times it was on the frontier same engine.
both times, the gasket bleeding out pressure would prevent it from adequetly holding pressure at idle only
warm and cold or just war?
Yes, pressures only got excessively low at warm operating temps
because the oil thins out some as it heats up, so generally pressures are higher when the engine is cold
i can't remember what pressure readings were with the engine cold though
but i clearly remember when warm they hovered around 5psi
the other one also fluctuated around 5-10 psi at idle
don't really see any issues with the pumps on these engines
especially with that mileage
if you need anything else just holler at me. Even if i am working on something It will send me an email on my phone and i can reply from my phone. thanks