Q7 with 4.2 - Oil Leaks - AudiWorld Forums

Go Back  AudiWorld Forums > Audi Models > Audi Q3 /Q5 / Q7 > Audi Q7 > Q7 Discussion
Reload this Page > Q7 with 4.2 - Oil Leaks
Notices
Q7 Discussion Discussion forum for the Audi Q7 SUV built from 2005 to 2015

Q7 with 4.2 - Oil Leaks

Reply

 
 
Old 01-06-2015, 04:33 PM
  #1
AudiWorld Member
Thread Starter
 
Join Date: Jul 2005
Location: Michigan
Posts: 284
Default Q7 with 4.2 - Oil Leaks

Hello Audi Gang! My Q7 has the 4.2 Liter V8. There are a couple of oil leaks, one is the oil pan, and the other...well...I'm not sure. It is on the right side of the engine, below the cam cover. I've tried looking from above and below the vehicle using a flash light, but I just can't tell where the leak is. I'm thinking of removing the right-front wheel and inner fender to try and get a better look. I have felt along the bottom edge of the cam cover and it is dry. What other items in this area could leak oil?

Also...regarding the oil pan, apparently there is no gasket, the factory used only a bead of sealant. I think that gaskets are available on-line. Should I use a gasket or just re-apply a bead of sealant?
testarossaguy is offline  
Reply With Quote
Old 01-06-2015, 05:42 PM
  #2
Audiworld Junior Member
 
Join Date: Nov 2013
Posts: 17
Default

I have the same engine and I replaced the crankshaft oil seal, just beside the pulley and it reduced oil leak by 50%. I still can see oil around the pan and leaking on the plasic bottom more on driver side. I'm using Mobil1 0W40, may be too liquid and oil is probably leaking from everywere, but lubricating everywere. Feel free to give your input or personal experience about the 4.2 V8 FSI.
Q7V8 is offline  
Reply With Quote
Old 01-07-2015, 03:16 PM
  #3
AudiWorld Member
Thread Starter
 
Join Date: Jul 2005
Location: Michigan
Posts: 284
Default

Hello Q7V8....I will have to take a closer look and see if the crankshaft seal on my Q7 is leaking. My other oil leak is dripping oil onto the right side exhaust manifold or catalytic convertor, and makes quite a stink. I have felt along the lower edge of the cam cover and it is dry. As for oil I plan on using 5W-40, not sure what brand yet, maybe Mobile-1 or Valvoline....as long as it meets VW Spec. 502.00.

I've owned older Audi cars with the 4.2 engine, but this is my first 4.2 FSI. I've been searching on-line for a Bentley shop manual but just can't bring myself to pay $130 for one. I have a VAG-COM to read codes and help diagnose things. My laundry list of things to fix on my Q7 are the oil pan leak, the "mystery" oil leak, change the transmission filter and fluid, and replace the driveshaft center bearing.
testarossaguy is offline  
Reply With Quote
Old 01-16-2015, 04:17 PM
  #4
Audiworld Junior Member
 
Join Date: Feb 2014
Posts: 30
Default

Hey guys, 07 q7 s-line here 4.2. I too have a leak problem. took it to my local audi dealer in manhattan, they told me the car had a huge oil leak and they had to reseal the engine, I've only got the oil min light once in 9 months. i don't see how its huge oil leak. well total parts and labor about $8000 +. Obviously I'm not going to pay that. any idea on what to check?
jav0520 is offline  
Reply With Quote
Old 01-17-2015, 06:25 AM
  #5
AudiWorld Member
Thread Starter
 
Join Date: Jul 2005
Location: Michigan
Posts: 284
Default

Hello JAV0520. I had a pre-purchase inspection performed on my Q7 before I bought it, one of the things the technician did was to remove the oil filler cap while the engine is running and listen for any changes in the sound, which may indicate a crankcase ventilation problem. If the engine is experiencing internal pressure this would tend to push gaskets and oil outwards. I've also heard there can be issues with the oil separator which is located underneath the intake manifold. The other usual suspects are the cam covers and oil pan. It would be great if an Audi Tech would jump into this thread and educate us....anyone....anyone.....???
testarossaguy is offline  
Reply With Quote
Old 01-17-2015, 01:05 PM
  #6
Audiworld Junior Member
 
Join Date: Feb 2014
Posts: 30
Default

the funny thing is that i only smell hot oil whenever i do sharp right turns. it's very weird to me.
jav0520 is offline  
Reply With Quote
Old 01-17-2015, 05:26 PM
  #7
AudiWorld Member
 
Join Date: Oct 2014
Location: Carlsbad NM
Posts: 500
Default

What you describe sounds like your passenger side cam chain tensioner gasket. (and half moon).
Which is located on the back of the passenger head.
I found some good videos to study.
same engine, but yours is a little bigger, same design.
Hope this will get you in the right area.


smith2010Q7 is offline  
Reply With Quote
Old 01-20-2015, 02:22 PM
  #8
Audiworld Junior Member
 
Join Date: Feb 2014
Posts: 30
Default

i hope thats the problem. looks like its wouldn't cost $8k to fix. I'm taking it to and indie shop sometime next month. ill post up results.
jav0520 is offline  
Reply With Quote
Old 01-20-2015, 02:49 PM
  #9
AudiWorld Member
Thread Starter
 
Join Date: Jul 2005
Location: Michigan
Posts: 284
Default

I agree $8,000 is a ridiculous amount to charge and I can't imagine how they come up with that number. Yesterday the weather was nice and sunny so I opened the hood and looked all over the passenger's side of the motor for potential oil leaks but it is so bloody cramped in there I couldn't see anything! Next I'm thinking I will pull off the right-front wheel and remove the inner fender panels if possible....to try and expose the engine a bit.
testarossaguy is offline  
Reply With Quote
Old 03-23-2015, 08:41 AM
  #10
Audiworld Junior Member
 
Join Date: Jun 2014
Posts: 79
Default

I would like to tell you about my leak, the plastic oil seperator developed an oil leak through a crack in the molded poly case. FYI
markray is offline  
Reply With Quote
 
 
 

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Boosted01tt
1.8T Discussion
5
01-03-2017 05:55 PM
lotuseleven
12v V6 Discussion
6
10-07-2015 03:27 PM
Tahoesilvers4
Audi allroad
1
09-10-2015 06:08 PM
ECS Tuning-Audi
A4 (B7 Platform) Discussion
0
09-01-2015 09:16 AM
ECS Tuning-Audi
Audi A5 / S5 / RS5 Coupe & Cabrio (B8)
0
09-01-2015 08:27 AM

Thread Tools
Search this Thread
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -8. The time now is 06:38 PM.


 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: