Diff leak only on driver's side(Pics)
#1
Diff leak only on driver's side(Pics)
I thought my diff is making little bit louder whine today.
So I checked my diff and found out there was(is) little leak.
It is only on the driver's side(no front, no passenger) and the leaking was not from the oil filling plug.
So I wiped the leaked oil and drove for 10 minutes but there was no more leaking and sound seemed normal.
The last time I changed my oil was 1 year ago and no leaking was there then.
What can it be? Is it Broken axle seal or what can be the reason for it?
So I checked my diff and found out there was(is) little leak.
It is only on the driver's side(no front, no passenger) and the leaking was not from the oil filling plug.
So I wiped the leaked oil and drove for 10 minutes but there was no more leaking and sound seemed normal.
The last time I changed my oil was 1 year ago and no leaking was there then.
What can it be? Is it Broken axle seal or what can be the reason for it?
Last edited by tigerlion; 05-24-2012 at 05:06 PM.
#6
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The vent is on that side. Clean it all off with some brake cleaner, run the car a few miles and take anothe look. If nothing then the vent blew some out. Happened to mine after driving hard for a little while.
OR, you can reach up by the vent, use a mirror to see (however you want to do it) and check for fluid by the vent.
OR, you can reach up by the vent, use a mirror to see (however you want to do it) and check for fluid by the vent.
#7
I always garage my car and I did not see any oil on my floor.
Does it mean it can be vent or just little leak from seal?
If whole case is cracked, wouldnt it leak a lot more than this?
Does it mean it can be vent or just little leak from seal?
If whole case is cracked, wouldnt it leak a lot more than this?
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#9
More pics
The red painted area was covered with oil+dirt(from just looking from bottom)
This is taken from the front driver side
This is taken from back driver side
It is taken from the top
Also from the top
It is from the top toward mid-plane
Also drove for 10 miniutes but no further leaking or any noticeable sound from the diff
Last edited by tigerlion; 05-25-2012 at 05:00 PM.
#10
#11
[Update]
I just opened filling plug to add more diff oil to compensate leaking.
But diff oil came out from the filling hole as soon as I opened the plug.
Does it mean there is no significant leaking?(Or no seal and crack)
I just opened filling plug to add more diff oil to compensate leaking.
But diff oil came out from the filling hole as soon as I opened the plug.
Does it mean there is no significant leaking?(Or no seal and crack)
#14
The vent is leaking, you can see it all wet in the pic third down from the bagged and tagged carrier. Very common problem, even in the V6 cars. GM has you relocate the vent by using a hose and another vent rattler, but all it does is move the leak. The next fix is to take out the diff and remove the fluid deflector inside the carrier. The newer ones didn't have the deflector and you didn't say what year you had, so it may not be a concern. I can't remember what year they dropped the deflector anyway. '07 I think. You can try keeping the fluid 1/4" inch below the fill hole, but don't go any lower.
#15
TECH Enthusiast
I wouldn't worry about it.
But definitely in a month, put it up on stands again, and take another peek at it just to make sure.
-meaty
#16
It's the vent. The dude above knows his ****. Mine was exactly like yours (same exact leak pattern) and when i installed the diff bushing i just popped the cap off the vent, put a foot of clear tubing with a hose clamp on the vent and ran it up as high as possible. If it still pukes fluid mount a small breather can. You said when you removed the fill plug fluid poured out so it was over full adding to the problem ( or causing it) so get the level correct and you probley be ok.