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Author Topic: Mystery leak at rear of car  (Read 5812 times)

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tunnie

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Mystery leak at rear of car
« on: 06 September 2006, 17:13:20 »

Big thanks to Pete for suggesting TFR to clean up the back diff, came up a treat.

Problem is, i don't think that is the leak. - After cleaning wiping the diff clean, the oil was jet back and very thick and encrusted.

The fluid leaking from the back last night was a very clear orange / browny colour, which is very strong if you smell it. Its very hard to describe but its very pundgent and has a 'burnt' smell to it. It does not smell like regualar engine oil, or brake fluid. Its colour suggested it might have been, but the smell is very different.

What colour would the oil be in a diff, thats very old? - I suspect mine has never been changed, but I can't imagine it being a very clear organge / brown.

The leak seams to be comming from the rear drivers side almost directly under the back seat area, i suspect its not my diff thats leaking but what else could it be?

Oh btw, the diff itself seamed in great shape, the prop itself and were it enters the diff was all fine and dry as a bone. As were the axel studs which went out to drive the rear wheels. The moved back and forth but not side to side, all the rubber seals going into the diff were dry and looked in good conidtion.

Any ideas on the mystery leak?

Thanks
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CaptainZok

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Re: Mystery leak at rear of car
« Reply #1 on: 06 September 2006, 17:14:44 »

Might be a daft idea Tunnie but could it be something coming from inside the car?
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tunnie

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Re: Mystery leak at rear of car
« Reply #2 on: 06 September 2006, 17:19:27 »

Quote
Might be a daft idea Tunnie but could it be something coming from inside the car?

Possible, the smell of the leaking fluid is very strong so i think i would notice it inside the car.

I have not carried any liquids in the car for ages, got my active sub in the boot. Various bottles of water and other bits in the boot, but they are in a blue stacker.

I guess its possible, but can't think what it would be.
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nixoro

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Re: Mystery leak at rear of car
« Reply #3 on: 06 September 2006, 17:26:37 »

It wouldn't be rear shock fluid as its in that general area.

Just a guess.

Scrap that Idea just looked at the piccy in your other thread.
« Last Edit: 06 September 2006, 17:37:30 by nixoro »
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tunnie

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Re: Mystery leak at rear of car
« Reply #4 on: 06 September 2006, 17:48:37 »

Quote
It wouldn't be rear shock fluid as its in that general area.

Just a guess.

Scrap that Idea just looked at the piccy in your other thread.

Acutally, don't. I thought that was the area before i left the tray under the car.... but it seams to drip away from the diff.

Something i did't think of... thanks nixoro.

Something to take another look off, and thats smack bang on the area it could be. Also Jaime mentioned that my rear shocks were on their way out...
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nixoro

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Re: Mystery leak at rear of car
« Reply #5 on: 06 September 2006, 17:51:39 »

Quote
Quote
It wouldn't be rear shock fluid as its in that general area.

Just a guess.

Scrap that Idea just looked at the piccy in your other thread.

Acutally, don't. I thought that was the area before i left the tray under the car.... but it seams to drip away from the diff.

Something i did't think of... thanks nixoro.

Something to take another look off, and thats smack bang on the area it could be. Also Jaime mentioned that my rear shocks were on their way out...

You've got me thinking too now, could you let us know if it is this, only I shall be checking mine tonight what with the MOT tomorrow.
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tunnie

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Re: Mystery leak at rear of car
« Reply #6 on: 06 September 2006, 17:55:12 »

Hehe.... made me wonder as well.

It would explain why the leaking oil is so clear, its also not comming from the diff area which was all black.

Its defo in the right area to be that, might take another look tonight.
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nixoro

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Re: Mystery leak at rear of car
« Reply #7 on: 06 September 2006, 17:58:47 »

I think I maybe lucky as the diff was coated in black stuff but I cleaned it off and haven't seen anymore from it but will be checking to be on the safe side :)
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CaptainZok

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Re: Mystery leak at rear of car
« Reply #8 on: 06 September 2006, 18:01:54 »

How about bouncing the rsend of the car, may generate some more oil to give you a chance of spotting the leak.
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tunnie

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Re: Mystery leak at rear of car
« Reply #9 on: 06 September 2006, 18:06:34 »

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How about bouncing the rsend of the car, may generate some more oil to give you a chance of spotting the leak.

Good idea!  :)
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CaptainZok

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Re: Mystery leak at rear of car
« Reply #10 on: 06 September 2006, 18:42:46 »

Anyone else got a vision of Tunnie jumping about like a loonie in his boot trying to generate an oil leak?  ;D
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tunnie

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Re: Mystery leak at rear of car
« Reply #11 on: 06 September 2006, 18:48:46 »

Quote
Anyone else got a vision of Tunnie jumping about like a loonie in his boot trying to generate an oil leak?  ;D

 ;D ;D

Maybe i should make a video with some silly music in the background.... ;)

And a Mirror angled down to look underneath the car  ;D ;D ;D
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zoltron

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Re: Mystery leak at rear of car
« Reply #12 on: 06 September 2006, 18:49:25 »

I would give the rear shocks careful consideration, that why I replaced mine last week. I had a wierd leak coming from the back but could not find it then when removing the rear wheel, to check the brake pads I found the shock was well knackered, the oil coming from it smelt foul. So I changed em both. Leak stopped.. :)

http://www.omegaowners.com/forum/YaBB.pl?num=1154032385/0

check that out that is my knackered shock, and if you look at the road you can see the oil leak from it when I sometimes park the wrong way round on the road.
« Last Edit: 06 September 2006, 18:54:49 by zoltron »
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STMO123

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Re: Mystery leak at rear of car
« Reply #13 on: 06 September 2006, 18:52:24 »

Might be the hypoid oil from the diff
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tunnie

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Re: Mystery leak at rear of car
« Reply #14 on: 06 September 2006, 18:55:05 »

Quote
I would give the rear shocks careful consideration, that why I replaced mine last week. I had a wierd leak coming from the back but could not find it then when removing the rear wheel, to check the brake pads I found the shock was well knackered, the oil coming from it smelt foul. So I changed em both. Leak stopped.. :)

Sounds like my problem, foul smelling leak too.

STMO what colour is really old hypoid oil? - Also it seams like the leak is not from the diff, its inbetween the diff and the drivers side rear wheel. Which would suggest the shocks
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