Smoke then diff fluid leak - CorvetteForum - Chevrolet Corvette Forum Discussion



C6 Corvette ZR1 & Z06
General info about GMs Corvette Supercar, LS9 Corvette Technical Info, Performance Upgrades, Suspension Setup for Street or Track

Smoke then diff fluid leak

Reply
 
 
 
Thread Tools Search this Thread
Old 08-13-2017, 02:28 AM   #1
The
CF Member
Thread Starter
 
Member Since: Aug 2016
Location: State College PA
Posts: 61
Thanked 7 Times in 7 Posts
Default Smoke then trans fluid leak

Are there any common issues that would cause a diff fluid leak at the rear end? Today after a pull I saw smoke out back. After parking, a friend noticed reddish specks on the rear bumper. Looking under the car he saw diff fluid leaking and dripping from the middle of the car and also off the rear sway bar. Any ideas what I might have broken? Of course I'm going to have the car looked at but the curiosity is killing me. It also would be nice to have some idea of what's wrong so Im prepared when talking to the shop.

Last edited by The; 08-13-2017 at 08:50 PM.
The is offline   Reply With Quote
Old 08-13-2017, 11:55 AM   #2
jayyyw
CF Senior Member
 
Member Since: Jun 2015
Location: Austin Tx
Posts: 990
Thanked 85 Times in 82 Posts
Default

Pretty sure the axle seals are a common leak point. Oil on exhaust is likely the culprit for the smoke.
jayyyw is offline   Reply With Quote
Old 08-13-2017, 12:28 PM   #3
The
CF Member
Thread Starter
 
Member Since: Aug 2016
Location: State College PA
Posts: 61
Thanked 7 Times in 7 Posts
Default

The is offline   Reply With Quote
Old 08-13-2017, 12:45 PM   #4
Tech
CF Senior Member
 
Tech's Avatar
 
Member Since: Jun 2005
Location: St. Louis Missouri
Posts: 4,255
Thanked 134 Times in 122 Posts
Default

Trans fluid is red. Diff fluid is tan. You have a diff cooler mounted to the left of the diff which is cooled by trans fluid. One of those connections could be leaking.
Tech is online now   Reply With Quote
Old 08-13-2017, 12:49 PM   #5
The
CF Member
Thread Starter
 
Member Since: Aug 2016
Location: State College PA
Posts: 61
Thanked 7 Times in 7 Posts
Default

That would be awesome if that's all it is. It does drive perfectly fine. I still got it towed back home though.

Last edited by The; 08-13-2017 at 12:51 PM.
The is offline   Reply With Quote
Old 08-13-2017, 08:26 PM   #6
The
CF Member
Thread Starter
 
Member Since: Aug 2016
Location: State College PA
Posts: 61
Thanked 7 Times in 7 Posts
Default

Maybe? Can't get up there to see if this is tight just yet. Getting ramps from a friend to drive up on to, hopefully in the next day or two. The actual trans fill plug that's just above this looks dry.

Last edited by The; 08-13-2017 at 08:27 PM.
The is offline   Reply With Quote
Old 08-13-2017, 08:32 PM   #7
MTPZ06
CF Senior Member
Support Corvetteforum!
 
MTPZ06's Avatar
 
Member Since: Dec 2008
Location: Honolulu HI
Posts: 9,526
Thanked 679 Times in 604 Posts
Default

My rear diff leaked...fixed under warranty
MTPZ06 is offline   Reply With Quote
Old 08-14-2017, 08:54 PM   #8
The
CF Member
Thread Starter
 
Member Since: Aug 2016
Location: State College PA
Posts: 61
Thanked 7 Times in 7 Posts
Default

No such luck guys. Somehow I managed to blast a hole out of the bottom of the bell housing.
The is offline   Reply With Quote
Old 08-14-2017, 10:26 PM   #9
MTPZ06
CF Senior Member
Support Corvetteforum!
 
MTPZ06's Avatar
 
Member Since: Dec 2008
Location: Honolulu HI
Posts: 9,526
Thanked 679 Times in 604 Posts
Default

Umm...something coming apart on the inside? I sure hope not...
MTPZ06 is offline   Reply With Quote
Old 08-14-2017, 10:52 PM   #10
The
CF Member
Thread Starter
 
Member Since: Aug 2016
Location: State College PA
Posts: 61
Thanked 7 Times in 7 Posts
Default

Quote:
Originally Posted by MTPZ06 View Post
Umm...something coming apart on the inside? I sure hope not...
It'll probably be a while before I find out for sure. I'll take the car to RPM in the late Winter / Spring when I have some loot. I'll update the thread when I do.
The is offline   Reply With Quote
Old 08-15-2017, 01:13 PM   #11
JHEBERT
CF Senior Member
 
JHEBERT's Avatar
 
Member Since: Apr 2015
Posts: 666
Thanked 104 Times in 67 Posts
Default

That hole belongs there, it's to tell you that the rear seal in the trans is leaking.
JHEBERT is offline   Reply With Quote
Old 08-15-2017, 02:37 PM   #12
Tech
CF Senior Member
 
Tech's Avatar
 
Member Since: Jun 2005
Location: St. Louis Missouri
Posts: 4,255
Thanked 134 Times in 122 Posts
Default

Quote:
Originally Posted by The View Post
It'll probably be a while before I find out for sure. I'll take the car to RPM in the late Winter / Spring when I have some loot. I'll update the thread when I do.
If you feel like tinkering, I'd check the connections and tubes for the diff cooler. The cooler is on the right/bottom of the picture. I'd carefully inspect each of the hard lines running to/from it on both sites of it. Red fluid will be in the 2 lines you can see, and tan/brown in the lines you can't see in this picture.

Tech is online now   Reply With Quote
Old 08-15-2017, 02:57 PM   #13
The
CF Member
Thread Starter
 
Member Since: Aug 2016
Location: State College PA
Posts: 61
Thanked 7 Times in 7 Posts
Default

Quote:
Originally Posted by JHEBERT View Post
That hole belongs there, it's to tell you that the rear seal in the trans is leaking.
I wonder how many people just JB weld that closed.
The is offline   Reply With Quote
Go Back   CorvetteForum - Chevrolet Corvette Forum Discussion >
Reload this Page
  • Smoke then diff fluid leak
  •  
     
    Reply

    Related Topics
    Thread Thread Starter Forum Replies Last Post
    Trouble shifting into 2nd gear at low speeds and rear diff qs xlaziox C7 General Discussion 5 10-28-2017 05:09 PM
    Please change out your factory diff fluid! HGperformance C7 Z06 Discussion 40 04-26-2017 03:34 PM
    Rear Noise: Possible Diff Quickshift_C5 C5 Tech 0 04-25-2017 10:04 AM
    Leaking Posi Unit ctjackster C1 & C2 Corvettes 12 04-23-2017 01:14 AM
    2007 Corvette Differential Issues alyon C6 Corvette General Discussion 12 07-02-2016 10:39 PM


    Thread Tools Search this Thread
    Search this Thread:

    Click for 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

    Sponsored Ads
    Vendor Directory

    All times are GMT -4. The time now is 10:33 AM.


    We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
     
    • Ask a Question
      Get answers from community experts
    Question Title:
    Description:
    Your question will be posted in: