08 G37 Oil pressure whistling

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wesbix
Posts: 2
Joined: Mon Jul 20, 2020 10:50 am
Car: 2008 Infiniti G37 S

08 G37 Oil pressure whistling

Postby wesbix » Mon Jul 20, 2020 11:35 am

Hey all, this is my first time on this site, so apologies if I mess anything up.

My g37 has just recently been making a very loud and high pitched squeel/whistle after running for a short period of time, around 30 seconds. The noise can be traced to the dipstick, as removing it will release a vacuum, and promptly halts the noise.
A friend said it may have been the pcv valves, but after removing and cleaning them(they rattle freely), the noise is still there, although maybe slightly quieter. Any ideas as to what the problem might be?


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telcoman
Posts: 5617
Joined: Sat Jul 08, 2006 11:30 am
Car: 2016 Q70 Bye 2012 G37S 6 MT w Nav 94444 mi bye 2006 Infiniti G35 Sedan 6 MT @171796mi. 2013 Altima 2.5SV
Location: Central NJ

Re: 08 G37 Oil pressure whistling

Postby telcoman » Tue Jul 21, 2020 4:38 am

wesbix wrote:
Mon Jul 20, 2020 11:35 am
Any ideas as to what the problem might be?
A vacuum leak?

wesbix
Posts: 2
Joined: Mon Jul 20, 2020 10:50 am
Car: 2008 Infiniti G37 S

Re: 08 G37 Oil pressure whistling

Postby wesbix » Tue Jul 21, 2020 6:22 am

That could definitely be a cause for the whistle itself, however I'm more concerned that the vacuum is too strong. When removing the dipstick, air rushes in for a bit before equalizing. I don't know what normal operating pressure is, so this may be fine, but I feel the vacuum is too high. I'll see if I can pinpoint where a vacuum leak might be though.


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