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toddy2
Spa-Francorchamps


Joined: 11 Jan 2015
Posts: 322
Location: Dorset


PostPosted: Sat Feb 16, 2019 4:54 pm    Post subject: (Updated)996 Mayo, noise, oil leak - should I be worried.... Reply with quote

Not having much luck with cars at the moment. Wifey's range rover blew both turbos last week and we're having these replaced (22hrs labour!). So in the meantime she's using my 9964S for the school run etc. lots of short journeys.

After being out today she reports that she heard a 'noise'. Great I thought Evil or Very Mad I couldn't hear anything, but spotted it has recently started leaking oil, there was a small patch from the day before and the oil level is low (still in the limits). Mayo in the cap, I put his down to the short journeys. What concerns me is the oil splattering on the bumper. Should I be concerned. Coolant seems ok.

I've told her not to touch it and I'm booking it in for a service and check over.
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Alex
Le Mans
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2000 Porsche 996 Carrera 4

PostPosted: Sat Feb 16, 2019 5:10 pm    Post subject: Reply with quote

Wash your car, clean that mayo out and top your oil level up to where it should be then check again after your next drive.
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toddy2
Spa-Francorchamps


Joined: 11 Jan 2015
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PostPosted: Sat Feb 16, 2019 5:18 pm    Post subject: Reply with quote

alex yates wrote:
Wash your car, clean that mayo out and top your oil level up to where it should be then check again after your next drive.


Good shout, I'll give that a go. Any suggestions on the best way to clean out the mayo. I just seem to push it further in when I use a cloth and my fat fingers don't fit.
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77szymon
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2003 Porsche 996 Carrera 4S

PostPosted: Sat Feb 16, 2019 5:19 pm    Post subject: Reply with quote

I have similar mayo on my bmw bad AOS was to blame, but also I'm dealing now with oil cooler and these could go bad too very common been told could be reason for mayo..? can you see from where oil is leaking?
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toddy2
Spa-Francorchamps


Joined: 11 Jan 2015
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PostPosted: Sat Feb 16, 2019 5:56 pm    Post subject: Reply with quote

Thanks, can't see where it's leaking. I've left a board underneath tonight
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deMort
Long Beach


Joined: 21 Mar 2015
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Location: Brighton


PostPosted: Sat Feb 16, 2019 7:17 pm    Post subject: Reply with quote

The Mayo is caused by moisture and heat .. water condensation in the pipe due to temp differences basically .

Im not sure why some cars get it and others dont .. different useage i guess .

clean out the cap but dont worry too much .. in the great scheme of things its a tiny amount compaired to the amount oil in these .. maybe a spoon or something similar to get some of it out of the tube .

Headgeasket , water in the oil .. you would have other symptoms .. white smoke out the exhaust .. misfires .. possibly oil in the coolant .. etc etc ... so i dont think its bad atm.

The residue on the bumper / pu is interesting though .. i would stick my head underneath the car and have a look .. any obvious oil leaks .. it looks like something is blowing back from under the car .. oil .. maybe .

It might also just be condensation from the exhaust .. cats do produce water as a by product after all .

Basically .. go with what Alex first said .. clean the rear end .. maybe have a look under the car and monitor it .
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toddy2
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PostPosted: Sat Feb 16, 2019 7:34 pm    Post subject: Reply with quote

Thanks deMort! There is a bit of smoke on start up same as always, but nothing too excessive that has me worried.

And I've noticed the spashback on the drivers side outer rear wheel so figure the oil leak is that side.
Spoon is a great idea👍
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deMort
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Joined: 21 Mar 2015
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PostPosted: Sat Feb 16, 2019 7:50 pm    Post subject: Reply with quote

Small amount of smoke on start up with ANY flat engine is normal .. you only start to worry when its prolonged or doesnt stop .. and even then its normally an AOS .

When we start talking engine damage we have other symptoms none of which you have mentioned .

An oil leak can indeed cover a rear bumper / pu .. again rare and it has to be a pretty bad leak to do this .. atm from your picture im leaning towards water from the exhaust and you only see it this time of year due to the shear amount of road salt and crap on the roads atm .

Im a biker . i hate this time of year .. half way to work and my helemt visor is covered in it to the point i struggle to see !
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toddy2
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PostPosted: Sat Feb 16, 2019 8:21 pm    Post subject: Reply with quote

deMort wrote:
Small amount of smoke on start up with ANY flat engine is normal .. you only start to worry when its prolonged or doesnt stop .. and even then its normally an AOS .

When we start talking engine damage we have other symptoms none of which you have mentioned .

An oil leak can indeed cover a rear bumper / pu .. again rare and it has to be a pretty bad leak to do this .. atm from your picture im leaning towards water from the exhaust and you only see it this time of year due to the shear amount of road salt and crap on the roads atm .

Im a biker . i hate this time of year .. half way to work and my helemt visor is covered in it to the point i struggle to see !


Thanks again, fair amount of oil lost overnight yesterday.

Ahh my days of riding all year round are over, I couldn't hack the cold getting in every nook and cranny, and remember spraying fog on the inside of the visor - you're a braver man than me Thumb
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deMort
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PostPosted: Sat Feb 16, 2019 8:29 pm    Post subject: Reply with quote

Aghh ok .. an oil leak if its on the ground .. just need to find what part is leaking ...

Do me a favour though .. try and stick your head underneath .. 997 that side and there is the tandem pump .. if thats leaking it can start to leak .. rather a lot more shall we say and is worth investigateing .

Or strick your phone there and take several pictures .. we may get lucky .

I know the bike feeling well .. times when i dont like it .. but very few .. also im 54 Very Happy but heated grips .. fingers warm and that will do me lol .
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toddy2
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PostPosted: Sat Feb 16, 2019 8:43 pm    Post subject: Reply with quote

Nothing obvious, it's been parked up for a couple of hours and I placed a timber board under so to try and measure whereabouts the leak might be.

Just spotted my under tray is missing too!
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deMort
Long Beach


Joined: 21 Mar 2015
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PostPosted: Sat Feb 16, 2019 8:46 pm    Post subject: Reply with quote

There is nothing there that i would consider an oil leak .. a few sweat marks but nothing blowing back ..

Im afraid im back to montior it as i think the marks on the PU may just be water out of the exhaust and this time of year with grime buildup .

may be possibly at the gearbox end .. but no oil is showing towards the rear .
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toddy2
Spa-Francorchamps


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PostPosted: Sat Feb 16, 2019 8:54 pm    Post subject: Reply with quote

Thanks again deMort, alway appreciate your dedicated responses.

I'll take another look in the morning, see if there is anything from the gearbox. I wanted to take it in for a service in any event, I'll get this booked in next week. So will ask them to explore.

Thumb
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Hans Gruber
Monza


Joined: 24 Mar 2015
Posts: 153
Location: Huddersfield

2002 Porsche 996 Carrera 4S

PostPosted: Sat Feb 16, 2019 9:08 pm    Post subject: Reply with quote

I wouldn’t worry too much about the mayo, particularly in light of the recent short journeys.

As for the oil on the rear PU and the drops of oil under the car, I had exactly the same thing not too long ago...more noticeable after a somewhat spirited run on the M62.

My local Indy identified it quickly, and fixed it for not too much cash. I have to admit, without sounding too Rowley Birkin QC, I have had a couple of glasses of vino and can’t remember what the issue was exactly. I know it was something that required a seal replacing and that something or other needing locking so I didn’t fancy it myself.

I’m sure deMort will be along shortly to identify the issue based on my flimsy description.

I would go and dig out the invoice and tell you what it was but ‘Shaun of the Dead’ has just started. And I’m very, very drunk....
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toddy2
Spa-Francorchamps


Joined: 11 Jan 2015
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Location: Dorset


PostPosted: Sat Feb 16, 2019 9:12 pm    Post subject: Reply with quote

Thanks for the reassurance Hans Grubber.

I'll book it and get it checked out Thumb
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Hans Gruber
Monza


Joined: 24 Mar 2015
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Location: Huddersfield

2002 Porsche 996 Carrera 4S

PostPosted: Sat Feb 16, 2019 9:33 pm    Post subject: Reply with quote

Had a look through the file during the ad break and it was the timing chain tensioner seal. Worth a look. I must admit when I saw oil on the back PU my back side literally fell out but it turned out to be a storm in a tea cup.

Good luck
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toddy2
Spa-Francorchamps


Joined: 11 Jan 2015
Posts: 322
Location: Dorset


PostPosted: Sun Feb 17, 2019 5:32 am    Post subject: Reply with quote

Hans Gruber wrote:
Had a look through the file during the ad break and it was the timing chain tensioner seal. Worth a look. I must admit when I saw oil on the back PU my back side literally fell out but it turned out to be a storm in a tea cup.

Good luck


Thanks good to know Thumb
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toddy2
Spa-Francorchamps


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PostPosted: Sun Feb 17, 2019 8:33 am    Post subject: Reply with quote

UPDATE - Jacked the car up this morning and found the leak is coming from the gearbox. It had been notchy and feared '2nd gear pop out' was coming. I'll book it in and see what's up.
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
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2000 Porsche 996 Carrera 4

PostPosted: Sun Feb 17, 2019 8:41 am    Post subject: Reply with quote

The actual gearbox or where it bolts to the back of the engine? Could be rms or ims seal.
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toddy2
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PostPosted: Sun Feb 17, 2019 2:04 pm    Post subject: Reply with quote

Thanks Alex,
I'll need to get it on a lift and shine a torch to be sure. But I reckon it's from the front end of the gearbox, the under tray is quite wet from oil. As far as I can see there is no place in the front end of the gearbox oil could leak from, no loose bolts or anything.
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