Anyone had a oil leak from a 308 HDi ?

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Fellow Frogger
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I have a 09 308 2.0 HDi auto that has done 80K mileage

Has anyone had a minor oil leak ?

The symptom being a small amount of oil on the garage floor

It is not obvious where it is coming from as it is not from the sump plug, oil filter or rocker cover
 
What's the root cause - rubbish seal, DMF failure, overboost, heat?
 
My rear main seal has failed twice. Both replaced under warranty. MY09 XSE SW HDi

ImageUploadedByTapatalk1416738580.695950.jpg


MY13 Kluger KX-S AWD / MY09 308 XSE HDi SW
 
My first 307's hdi was the same rear main oil weep took up and no sign of a leak in the last 60,000 klm since changing to Penrite enviro +5 w . now 135'k
The lower {plastic } engine shield needs taking of & steam cleaned or gernie ed as oil is stuck in the insulation and will contine to seep out for a time if weep hopefully stops with the use of Penrite oil.
JPT .
2 x 307 hdi 2006 + 2007
 
All thank you for your replies :)

Psychlone said:
Check under the air doser. Oil from the turbo can pool in there and leak out of it.
Click to expand...

In the picture I have attached I had a look all around what I believe is the air doser but could not find any wet oil

Where I have a label in the picture called air doser is that the same one you are referring too ?

Note where I have a label called dry oil, is that the area you mean as there was dry oil there but not wet. Tomorrow I will investigate the patch called to be checked a I only notice that after the photo

IMG_20141124_193644 leak.jpg
 
Is the oil running down the back of the engine (firewall side)
if so, could be leaking from just below the rocker cover at the back. There is a big plate that holds the cam in on 2l hdi's that sits under the rocker cover, so even though the rocker cover is not leaking, it could be leaking just out of site from this plate, hence making the leak hard to locate.
 
no no no!

coming from a dealer garage its commonly misdiagnosed as a rear main. if you get under the car and look up past the gearbox onto the coolant hoses, if you see oil on them or the surrounding area up high it is the high pressure fuel pump oil seal, which mates to the head.

it also leaks down through the gearbox, hence the misdiagnosis. Much less common are the sandwich plate on the head and the rear main if i remember correctly was replaced with a superseded part so that should have filtered through to cars under warranty
 
Thank you all again for your replies :)


cprrw132 said:
May be Enviro + DL1 5 w 30 for a 308
Click to expand...

That is indeed the oil I use hopefully it isn't causing the leak !

Capago said:
no no no!

coming from a dealer garage its commonly misdiagnosed as a rear main. if you get under the car and look up past the gearbox onto the coolant hoses, if you see oil on them or the surrounding area up high it is the high pressure fuel pump oil seal, which mates to the head.

it also leaks down through the gearbox, hence the misdiagnosis. Much less common are the sandwich plate on the head and the rear main if i remember correctly was replaced with a superseded part so that should have filtered through to cars under warranty
Click to expand...

Below are some pictures. As you can see there is plenty of oil in the area that I believe is the junction between the gear box and engine ?

As you can I did look up in the gap between the engine and gearbox above the axle and I can see a hose pipe, what it is I do not know but it did have wet oil on it but not as much as further down, could this be fuel pump oil seal you mention ?

IMG_20141128_170607 under car #1.jpgIMG_20141128_170953 #3.jpgIMG_20141128_171531 #2.jpg
 
if its the rear main it will be confined to the gearbox area, it wont get thrown up like that. It looks like more at the gearbox end becuase the pump has a localised leak which can spread oil everywhere

it is the high pressure fuel pumps oil seal, where it joins to the cylinder head (it is driven by the camshaft)

Make sure you change the high pressure fuel pipe to the rail as they are intended to be tightened only once.
 
Capago said:
if its the rear main it will be confined to the gearbox area, it wont get thrown up like that. It looks like more at the gearbox end becuase the pump has a localised leak which can spread oil everywhere

it is the high pressure fuel pumps oil seal, where it joins to the cylinder head (it is driven by the camshaft)

Make sure you change the high pressure fuel pipe to the rail as they are intended to be tightened only once.
Click to expand...

Thank you for the reply :)

Sounds like you feel it is the high pressure fuel pump oil seal ?

I won't be doing this work myself but I had a look at the Peugeot workshop manual and I see they estimate the rear main seal an approx 6.5 hr job and the fuel pump oil seal a 1.5 hr job

Note the rear seal was done Dec 2011 under warranty [42K ago] so I'll be annoyed if it is that again !

Now I need to decide whether I use a Peugeot centre or an independent [non Peugeot specialist] local, any thoughts ?
 
Yeah if there is oil up high then definately the pump. I believe they updated the rear main seal but i cant remember.

dealer personally, they know whats required for jobs like this. Local mechanics may charge whatever.. my 2c anyway.
 
ok I got the car back from a dealership today who kindly offered to look at no cost

It is the rear main seal

There diagnosis is that this is as a result of excessive carbon/gunk build up via the air intake and manifold as evidenced by a totally clogged intake intake air pressure sensor result in the engine not being a to "breathe" resulting in pressure on the main seal

They are quoting an 11 hour job (5 out and 5 in and 1 to fit) for the rear main and a 4.5 hour job on the intake manifold (2 out and 2 in and .5 to clean)

What are peoples thoughts on a] the prognosis b] the hours ?
 
Why was the airspeed so slow in the intake, as to allow heavy deposit formation?
 
I'm a touch confused here. If it's the DW10B 2.0 HDI motor, the crankcase vents up through the head into an oil separator built into the plastic manifold on top. It's the boxy bit at the back, and has chambers and turns that will cause suspended oil to drop out of the airstream and fall back into the sump. It vents then via a hose into the air intake in front. Where is the blockage?
 
It's definitely a gearbox out job to complete but not sure if subframe has to be removed too etc. so 11 hours, maybe?

I've had 2 seals replaced under warranty (thank you Allan Mackay Autos!) who mentioned the original (version 1) seals were a badly made part. Hence why they unknowingly fitted the bad part on my first seal replacement. That first replacement seal started leaking within 5000kms.

2nd, tight as a drum and no leaks!


MY13 Kluger KX-S AWD / MY09 308 XSE HDi SW
 
addo said:
Why was the airspeed so slow in the intake, as to allow heavy deposit formation?
Click to expand...

They have no offered an explanation for the deposit build up other than use of B20 biodiesel, which they admit is speculation


seasink said:
I'm a touch confused here. If it's the DW10B 2.0 HDI motor, the crankcase vents up through the head into an oil separator built into the plastic manifold on top. It's the boxy bit at the back, and has chambers and turns that will cause suspended oil to drop out of the airstream and fall back into the sump. It vents then via a hose into the air intake in front. Where is the blockage?
Click to expand...

All they say at this stage is that there is excessive carbon build up [presumably on the air intake]

What I am not sure of yet is that they link carbon build up to rear seal failure and some people are saying that is not possible


Mi16 Man said:
It's definitely a gearbox out job to complete but not sure if subframe has to be removed too etc. so 11 hours, maybe?

I've had 2 seals replaced under warranty (thank you Allan Mackay Autos!) who mentioned the original (version 1) seals were a badly made part. Hence why they unknowingly fitted the bad part on my first seal replacement. That first replacement seal started leaking within 5000kms.

2nd, tight as a drum and no leaks!


MY13 Kluger KX-S AWD / MY09 308 XSE HDi SW
Click to expand...


How many kms have you done since your 2nd replacement ?

My rear seal was also done under warranty at 32K, car is now at 82k

It seems to be weak point of the 308s and that rear seal failures are not uncommon even the dealership said as much, surely one doesn't need to replace that seal every 40K or so ?!
 
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