Oil Pressure Concerns

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Jul 2, 2015 | 03:51 PM

leea_44

Thread Starter

Heel & Toe

Joined: Jul 2013

Posts: 17

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From: Texas City Texas

Oil Pressure Concerns

New owner (First Vet)

2014 Stingray Base Coupe
Manual
27,363 miles

Noticed the last couple of start-ups first thing in the morning, the sound of engine valves tapping but oil level is good. The tapping noise dissipates after a few minutes of driving. I have also noticed oil pressure @ 27 lbs during idle. While idling, oil pressure will rise to about 35 lbs and then drop back to 27 lbs. again. Is this normal?

Jul 2, 2015 | 04:01 PM

Steve_R

Team Owner

Joined: Mar 2012

Posts: 49,388

Likes: 3,924

From: Best Island in the U.S.

St. Jude Donor '12 thru '17

30 psi at idle isn't a problem. Can't comment on the noise without hearing it. It's under warranty though so get it checked by a dealer.

Jul 2, 2015 | 04:22 PM

C7&7

Le Mans Master

Joined: Mar 2010

Posts: 7,052

Likes: 945

From: DFW TX

Yea a video of the tapping would be helpful. Oil level is good? Are you sure it's not just the direct injection system making all the noise it does right at start up.

Jul 2, 2015 | 04:25 PM

leea_44

Thread Starter

Heel & Toe

Joined: Jul 2013

Posts: 17

Likes: 0

From: Texas City Texas

Quote:

Originally Posted by C7&7

Yea a video of the tapping would be helpful. Oil level is good? Are you sure it's not just the direct injection system making all the noise it does right at start up.

You could be right. I'll get it checked out just to be sure. I'm just concerned about the oil pressure fluctuation when idleling in conjunction w/ the noise.

Jul 2, 2015 | 04:27 PM

C7&7

Le Mans Master

Joined: Mar 2010

Posts: 7,052

Likes: 945

From: DFW TX

Quote:

Originally Posted by leea_44

You could be right. I'll get it checked out just to be sure. I'm just concerned about the oil pressure fluctuation when idleling in conjunction w/ the noise.

My oil pressure bounces around some as well when it's warming up. I wouldn't worry too much about that.

Jul 2, 2015 | 04:44 PM

Red C8 of Jax

Safety Car

Joined: Sep 2001

Posts: 4,495

Likes: 1,263

From: Jacksonville FL

Do an advanced search on this forum (C-7 General Discussion) about tapping noise at warm up. Has been discussed many times. After you review these threads you can make your decision.

Jul 2, 2015 | 05:00 PM

DavePowell

Instructor

Joined: Dec 2014

Posts: 162

Likes: 27

From: Lexington KY

This is the first engine I've seen that has the engine computer controlling the oil pressure. It's no longer the constant pressure as in other engines.

I was also a little thrown by the voltage regulator being controlled by computer, as voltage on the C7 varies a lot depending on need and engine load.

Dave

Jul 2, 2015 | 05:57 PM

Matt-G

Intermediate

Joined: May 2015

Posts: 49

Likes: 2

From: Dallas Texas

Quote:

Originally Posted by leea_44

You could be right. I'll get it checked out just to be sure. I'm just concerned about the oil pressure fluctuation when idleling in conjunction w/ the noise.

I hope this is normal as my 2014 Z51 M7 oil pressure does always fluctuate when starting up from cold. I see the oil pressure needle jumping up and down few times and then it stabilizes when the engine warms up. I am not hearing any funny noises tho.