Oil Leak

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lisasherratt
Donor 2023
Posts: 17
Joined: 05 Sep 2021, 12:34

Oil Leak

Post by lisasherratt »

Hello

I would really appreciate a diagram of the engine and ancillaries for my DS4 2012 as we are trying to locate an oil leak.

Vin no VF7**************[VIN obfuscated, can be read by forum staff]

Many thanks in advance :)
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GiveMeABreak
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Re: Oil Leak

Post by GiveMeABreak »

Parts diagrams are too numerous for an oil leak issue at this time, so I've moved your request to the technical section.

First you need to get an idea of where the oil is leaking from using the following - each has its own fault finding procedures. Let me know which (A-F) is the most likely place and we can take it from there:

Click Image to Zoom
ds4 oil leak A.PNG

Zone "A" Timing face
Zone "B" Upper face
Zone "C" Coupling face
Zone "D" Exhaust face
Zone "E" Lower panel
Zone "F" Inlet face
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Marc
lisasherratt
Donor 2023
Posts: 17
Joined: 05 Sep 2021, 12:34

Re: Oil Leak

Post by lisasherratt »

Apologies I didn't get a notification so didn't know this had happened, thought I'd just failed to actually post the question!

I will work it out and let you know! thank you!
lisasherratt
Donor 2023
Posts: 17
Joined: 05 Sep 2021, 12:34

Re: Oil Leak

Post by lisasherratt »

Hi, so if I could have A and D that would be awesome - it's possibly at the corner where the two of those join. Its been really hard to pinpoint and we've tried lots but it doesn't leak wilst stationary, only whilst the car is being driven - has gone through two auxiliary belts so far...

Many thanks!!
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GiveMeABreak
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Re: Oil Leak

Post by GiveMeABreak »

Ok, there are specific procedure for narrowing this down, so I'll get the onward instructions for zones A and D shortly.
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Marc
lisasherratt
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Posts: 17
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Re: Oil Leak

Post by lisasherratt »

Your help is much appreciated!
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GiveMeABreak
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Re: Oil Leak

Post by GiveMeABreak »

Ok, so Here's Zone 'A' for now. I'll put up the Zone 'D' tomorrow morning.

Timing Face

Preliminary operations:
  • Place the vehicle on a lift
  • Remove the engine style cover
Lisa A1.PNG
ZoneProbabilityComponent to be checked firstLocating the leak
"G"LowCylinder head cover on cylinder headTiming face - Stage G1
"H"LowsumpTiming face - Stage H

Step G1 - Cylinder head cover on cylinder head
Lisa A12.PNG
Sealing
- Detachable seal
- 12 bolts

Probability: Low

Possible causes:
- Incorrect tightening of the fixing bolts
- Defective seal
- No seal
Access: Easy
Repair: Replace the seal

Step G2 - timing chain guide upper fixing bolts
Lisa A13.PNG
Sealing: Flat seal removed
Probability: Low
Possible causes
- Incorrect tightening of the fixing bolt
- Defective seal
- No seal
Access: Difficult
Repair: Replace the seal and the bolt
N.B.: Do not oil the seal.


Step G3 - Cylinder head on cylinder block
Lisa A14.PNG
Sealing:
- Detachable seal
- 13 bolts
Probability: Average
Possible causes
- Incorrect tightening of the fixing bolts
- Faulty cylinder head gasket
Access: Difficult
Repair: Replace the cylinder head gasket

Step H1 - sump
Lisa H1.PNG
Sealing:
- Seal applied of silicon type
- 16 bolts
Probability: Low
Possible causes
- Incorrect tightening of the fixing bolts
- Discontinuity of the sealing bead
Access: Easy
Repair: Repair of the sealing of the area using an approved product

Step H2 - Lower fixing bolts of the timing chain guides
Lisa H2.PNG
Sealing: Detachable O-ring seal
Probability: Low
Possible causes
- Incorrect tightening of the plug
- Absence of seal
- Defective seal
Access: Difficult
Repair: Replace the bolt (Including the seal)


Step H3 - Oil core cap
lisa H3.PNG
Sealing: Force-fitted cap and sealing paste
Probability: Low
Possible causes
- Cap shape fault
- Absence of sealing paste
Access: Difficult
Repair: Replace the cylinder block

Step H4 - Crankshaft main bearing casing on cylinder block
Lisa H4.PNG
Sealing: Seal applied of silicon type
Probability: Low
Possible causes
- Incorrect tightening of the fixing bolts
- Discontinuity of the bead of silicon
Access: Difficult
Repair:
- Check the tightening torques
- Redo the sealing of the crankshaft main bearing casing on the cylinder block, using an approved product

Step H5 - Crankshaft
Lisa H5.PNG
Sealing: Dynamic seal
Probability: Low
Possible causes
- Seal damaged
- Lip turned over
- Routing of the seal
Access: Difficult
Repair: Replace the dynamic seal
N.B.: Check whether the dynamic seal has been coated, if not, coat the seal when refitting.
Please Don't PM Me For Technical Help

Marc
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GiveMeABreak
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Re: Oil Leak

Post by GiveMeABreak »

Zone D - Exhaust Face
Lisa Zone D Exhaust Face.PNG
ZoneProbabilityComponent to be checked firstLocating the leak
"M"LowTurbocharger lubrication pipe on turbochargerExhaust face - Stage M1
"N"LowsumpExhaust face - Stage N1


Step M1 - Turbocharger lubrication pipe on turbocharger
Lisa M1.PNG
Sealing:
- Banjo type
- 2 washers
- 1 bolts
Probability: Low
Possible causes
- Incorrect tightening of the fixing bolt
- Fault with the washer sealing
- Absence of sealing washer
- Fault with the sealing of the union
Access: Easy
Repair: Replace the union bolt and the seals

Step M2 - Cylinder head cover on cylinder head
Lisa M2.PNG
Sealing:
- Detachable seal
- 12 bolts
Probability: Low
Possible causes
- Incorrect tightening of the fixing bolts
- Defective seal
- No seal
Access: Easy
Repair: Replace the seal

Step M3 - dipstick
Lisa M3.PNG
Sealing: Detachable O-ring seal
Probability: Low
Possible causes
- Defective seal
- Absence of seal
Access: Easy
Repair: Replace the dipstick


Step M4 - Oil gauge guide on cylinder head
Lisa M4.PNG
Sealing: Detachable seal
Probability: Low
Possible causes
- Defective seal
- Absence of seal
Access: Average
Repair: Replace the oil gauge guide

Step M5 - Exhaust camshaft dephaser solenoid valve
Lisa M5.PNG
Sealing:
- Detachable O-ring seal
- 1 bolts
Probability: Low
Possible causes
- Incorrect tightening of the fixing bolt
- Defective seal
- Absence of seal
Access: Average
Repair: Replace the electrovalve

Step M6 - Oil non-return pipe on cylinder head
Lisa M6.PNG
Sealing: Detachable O-ring seal
Probability: Low
Possible causes
- Incorrect tightening of the valve
- Defective seal
- Absence of seal
Access: Average
Repair: Replace the cylinder head

Step M7 - Oil gallery balls on cylinder head
Lisa M7.PNG
Sealing: Balls force-fitted
Probability: Low
Possible causes: Ball shape fault
Access: Average
Repair: Replace the cylinder head

Step M8 - Cylinder head on cylinder block
Lisa M8.PNG
Sealing:
- Detachable seal
- 13 bolts
Probability: Average
Possible causes
- Incorrect tightening of the fixing bolts
- Faulty cylinder head gasket
Access: Difficult
Repair: Replace the cylinder head gasket
Step N1 - sump
Lisa N1.PNG
Sealing:
- Seal applied of silicon type
- 16 bolts
Probability: Low
Possible causes
- Incorrect tightening of the fixing bolts
- Discontinuity of the bead of silicon
Access: Easy
Repair: Repair of the sealing of the area using an approved product

Step N2 - Crankshaft main bearing casing on cylinder block
Lisa N2.PNG
Sealing:
- Seal applied of silicon type
- 18 bolts
Probability: Low
Possible causes
- Incorrect tightening of the fixing bolts
- Discontinuity of the bead of silicon
Access: Difficult
Repair
- Check the tightening torques
- Redo the sealing of the crankshaft main bearing casing on the cylinder block, using an approved product

Step N3 - Oil filter cover
Lisa N3.PNG
Sealing: Detachable seal
Probability: Low
Possible causes
- Incorrect tightening of the cover
- Defective seal
- Absence of seal
Access: Average
Repair: Replace the oil filter cover

Step N4 - Oil pressure sensor
Lisa N4.PNG
Sealing: Detachable seal
Probability: Low
Possible causes
- Incorrect tightening
- Defective seal
- Absence of seal
Access: Average
Repair: Replace the seal

Step N5 - Oil channel cap
Lisa N5.PNG
Sealing: Cap mounted and tightened on the support
Probability: Low
Possible causes
- Incorrect tightening
- Fault in the shape of the working surfaces
Access: Average
Repair: Replace the oil filter support


Step N6 - Exchanger cover on oil filter support
Lisa N6.PNG
Sealing:
- 4 separate seals
- 5 bolts
Probability: Low
Possible causes
- Incorrect tightening of the fixing bolts
- Seals defective
- Absence of seals
Access: Difficult
Repair: Replace the oil filter support

N7 - Oil filter support on cylinder block
Lisa N7.PNG
Sealing:
- 2 separate seals
- 4 bolts
Probability: Low
Possible causes
- Incorrect tightening of the fixing bolts
- Defective seal
- Absence of seal
Access: Difficult
Repair: Replace the seal (Set of seals)

Step N8 - Turbocharger lubrication return pipe on oil filter support
Lisa N8.PNG
Sealing:
- Pipe force-fitted
- Clamping collars
Probability: Low
Possible causes
- Incorrect tightening of the clip
- Crimping fault
- Incorrect fitting of the pipe
Access: Difficult
Repair: Replace the turbocharger lubrication return pip

Step N9 - Turbocharger lubrication return pipe on turbocharger
Lisa N9.PNG
Sealing:
- Detachable flat seal
- 1 bolts
Probability: Low
Possible causes
- Incorrect tightening of the fixing bolt
- Defective seal
- No seal
Access: Difficult
Repair: Replace the turbocharger lubrication return pipe O-ring seal

Step N10 - Turbocharger lubrication pipe on cylinder block
Lisa N10.PNG
Sealing:
- Banjo type union
- 2 flat washers
- 1 bolts
Probability: Low
Possible causes
- Incorrect tightening of the fixing bolt
- Bolt head fault
- Washer absent or incorrectly positioned
- Fault with the banjo union
Access: Difficult
Repair: Replace the union bolt and the seals
Please Don't PM Me For Technical Help

Marc