I think I have figured out a easy, no tools required way to check for a leaking rear timing cover.

All you need is an OBD-II scanner (I use ELM327 Wi-fi) and an OBD app (Torque or OBD Fusion, or other)
Connect to your car and look at your Mode $06 data, MID / Component ID $35+$36

Here it my data from this Feb 29th:
CID / TID / test result / min / max / pass+fail
$35 - VVT Monitor Bank 1 TID $80 - Manufacturer Defined 3 -13 13 deg Pass
$35 - VVT Monitor Bank 1 TID $82 - Manufacturer Defined -2 -13 13 deg Pass
$36 - VVT Monitor Bank 2 TID $80 - Manufacturer Defined 3 -13 13 deg Pass
$36 - VVT Monitor Bank 2 TID $82 - Manufacturer Defined -1.5 -13 13 deg Pass

If the test result is less than -13 or more than +13, then a check engine light will be either P0011 or P0021.

My thinking is if the test result is around the middle (-5 to 5 or so..) the intake VTC is operating fine. If the VTC is operating fine, it must have the oil pressure it needs.

My ASK:
If possible, post your mode $06 data for item $35/$36. If you happen to have an oil pressure gauge, mention your oil pressure at idle.

I should have my oil pressure sensor gauge installed by next week (as long as the weather is not too cold) and hope to corrolate oil pressure to the test result. OK oil pressure should equal a test result in the middle. Low oil pressure should indicate a value closer to the min or max.

 

I'll check mine tomorrow if my app allows. I'm using Blue Driver.

Myles

 

Subscribing for updates and when I drive my G in the spring (hopefully just a month away) I'll post my info as I have the same OBD reader etc.

 

2013 G37xS with approx. 27,500 miles, running Infiniti-brand 5w30 (which I believe to be Mobil mineral/synthetic blend)

Immediately After Cold Start in 35°F Ambient Temperature:


ID Value
----- -----
35 80 1.5°
35 82 -0.5°
36 80 2.5°
36 82 0.5°


After a 12-mile Drive:


ID Value
----- -----
35 80 2.0°
35 82 -0.5°
36 80 1.5°
36 82 0.5°


Myles

 

Do have an oil pressure gauge -or- do you know your oil pressure at idle?
Our numbers are very similar... My oil pressure gauge will be put on when the weather warms up.

 

Unfortunately, "no" to both.

Myles

 

Does the gauge go in place of the oil pressure switch?

Myles

 

No, I believe most use a sandwich style plate adapter in between the oil filter male to female threads. From there the adapter allows a tapped hole for the oil pressure sender unit to grab its data.

Would be awesome if this test could prove this out or at least give insight to an issue!

 

It is best to have the oil pressure sender/sensor connected to where the oil pressure switch is. This will read the oil pressure AFTER the oil filter.

A pressure gauge connected to a sandwich plate will read the pressure BEFORE the oil filter.
At idle, they should be very close, but at higher RPM, I suspect there will be a 10+ PSI difference. I will be installing 2 pressure sensors (engine port & sandwich plate), to see what the difference is. This may also tell me when the internal oil filter bypass is open, as the pressure before the oil filter will drop when the filter bypass valve opens. (I think!)