Oil leak, rear of engine - Rennlist Discussion Forums



Oil leak, rear of engine

Reply
 
Thread Tools Search this Thread
Old 03-13-2017, 02:30 PM   #1
DWNDRAFT
User
Thread Starter
 
Join Date: Jan 2016
Posts: 63
Default Oil leak, rear of engine

I have the exhaust off for a center muffler delete install, and notice some drips hanging under the engine at the very rear.

Nothing is on the floor, so not a major leak, but I can see that it must have leaked a little for a while based, on the smudge build up in the area.
Car has been stationary for 6months now.

I was thinking FMS (crank pulley), but I see no wet areas behind the pulley, only dried up smudge. The wet areas are on the cross over tube from cylinder bank 1 to 2. What area the common areas causing such a leak? I read someone else had changed some aluminium seal/crush rings in the area, but I am not sure where they are located?

Wet area seen in picture. The cross over tube was wiped a litte, drips where hanging in the middel of the tube.

DWNDRAFT is offline   Reply With Quote
Old 03-13-2017, 02:49 PM   #2
CosmosMpower
Addict
Rennlist Member
 
CosmosMpower's Avatar
 
Join Date: May 2012
Location: The Republic
Posts: 1,706
Default

Rear main seal? Do you drive the car frequently or does it sit for extended period of time?
CosmosMpower is offline   Reply With Quote
Old 03-13-2017, 03:04 PM   #3
ilko
Agent Orange
Rennlist Member
 
ilko's Avatar
 
Join Date: Jun 2006
Location: The Highest Point on Manhattan
Posts: 15,172
Default

Make sure it is an oil leak first and not hydraulic fluid. The power steering reservoir on top of the engine is also prone to leaks...
ilko is offline   Reply With Quote
Old 03-13-2017, 03:14 PM   #4
Spyerx
Addict
Rennlist Member
 
Spyerx's Avatar
 
Join Date: Mar 2012
Location: SoCal
Posts: 8,703
Default

clean it up really good, drive it, identify the source.
Spyerx is offline   Reply With Quote
Old 03-13-2017, 03:38 PM   #5
DWNDRAFT
User
Thread Starter
 
Join Date: Jan 2016
Posts: 63
Default

Not RMS, FMS if anything.
Cars sits duribg the winter, also before me.
Great input on power steering fluid, any particular place it leaks from?
DWNDRAFT is offline   Reply With Quote
Old 03-13-2017, 03:50 PM   #6
Spyerx
Addict
Rennlist Member
 
Spyerx's Avatar
 
Join Date: Mar 2012
Location: SoCal
Posts: 8,703
Default

The PS pump is on the right side of the motor if you're looking into the bay. That seepage seems on the other side. Most common place you'll see seepage is at the connection of the pipes to the tank. And I don't think you'd see dripping where you are seeing it.

You really need to clean it up and even just idle it, run it and see if you can identify the source. FMS is one possibility. There are other bits in that area.

BTW, that tube carries coolant.
Spyerx is offline   Reply With Quote
Old 03-13-2017, 04:26 PM   #7
DWNDRAFT
User
Thread Starter
 
Join Date: Jan 2016
Posts: 63
Default

Could it be oil pump below the pulley?

Removing the pulley to further inspect should be straight forward, using a tool to hold the pulley/engine from turning. Any experience here?
DWNDRAFT is offline   Reply With Quote
Old 03-13-2017, 04:56 PM   #8
MC 968CS
User
 
MC 968CS's Avatar
 
Join Date: Jan 2009
Location: Sydney, Australia
Posts: 412
Default

I'm thinking check power steering. It leaks a little from the top of the reservoir tank and forms that sludge mentioned.

Now.....don't buy a new tank. For hundreds of dollars. Like Porsche mechanics for road car will propose. The Porsche Motorsport department sells a repair kit they used on the 997.1 cup for about $20.
MC 968CS is offline   Reply With Quote
Old 03-15-2017, 03:40 PM   #9
DWNDRAFT
User
Thread Starter
 
Join Date: Jan 2016
Posts: 63
Default

Tracing from underneath it seems the origin is the center of the engine between the very lower part og the case and the pulley somewhere.. Pulley area not wet.
DWNDRAFT is offline   Reply With Quote
Old 03-15-2017, 04:18 PM   #10
DWNDRAFT
User
Thread Starter
 
Join Date: Jan 2016
Posts: 63
Default

Can the rear engine mount bracket be removed with the engine in place ?
Pretty sure the leak is somewhere behind the rear bracket plate?
DWNDRAFT is offline   Reply With Quote
Old 03-16-2017, 02:29 PM   #11
AudiOn19s
Addict
Rennlist Member
 
AudiOn19s's Avatar
 
Join Date: Jun 2005
Location: Columbus OH
Posts: 3,811
Default

I'd bet it's front main even though you don't really see it around the pulley. Mine made a mess all below the pulley and I'd get oil basically migrating down the center of the cases where they came together.

Good news is if you're handy with tools and know what you're doing in there it's not that bad of a job. Set aside an afternoon and grab your favorite 6 pack and have at it.

http://rennlist.com/forums/996-gt2-g...ement-diy.html
AudiOn19s is offline   Reply With Quote
Old 03-16-2017, 03:38 PM   #12
DWNDRAFT
User
Thread Starter
 
Join Date: Jan 2016
Posts: 63
Default

You could be right. Was thinking to take the pulley of and check, but need to find an appropriate tool to hold the pulley first.
DWNDRAFT is offline   Reply With Quote
Old 03-16-2017, 05:00 PM   #13
Spyerx
Addict
Rennlist Member
 
Spyerx's Avatar
 
Join Date: Mar 2012
Location: SoCal
Posts: 8,703
Default

I'm not sure the engine carrier can be removed in place. In fact, I think it may cause coolant to run out when you pull those bolts. Which maybe you can get at with the bumper removed... Man, trying to remember someone here tried this and it made a mess... I think it was that.
Spyerx is offline   Reply With Quote
Old 03-16-2017, 05:26 PM   #14
DWNDRAFT
User
Thread Starter
 
Join Date: Jan 2016
Posts: 63
Default

Is there a WSM describing the pulley And seal work?

Guess I need:
pulley holding tool
seal install tool
new seal #
new bolt #
new friction washer #
some kinda of loctiet #
tq spec?
DWNDRAFT is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Oil Overfill Porsche 991 GT3 911 ľ Easy removal of excess oil siswati 991 GT3 GT3RS and 911R 74 02-15-2017 04:20 PM
Manual Transmission Leak Michael Benno 928 Forum 9 07-14-2016 02:18 PM
Post Assembly Oil Leak EJZero1 924/931/944/951/968 Forum 10 11-01-2015 05:19 PM
Passenger side coolant leak on the rear of the engine. ocran 996 Forum 7 12-24-2014 04:24 AM
How to get to the sunroof drain tube? axhoaxho 924/931/944/951/968 Forum 8 01-06-2006 05:24 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

Forum Jump


All times are GMT -3. The time now is 12:58 AM.


Copyright ę 1998 - 2015 Rennlist.com