No. 180-18-2

Service
Technical Information
180/18 ENU
1582
1
Complaint - Cylinder Head Cover Near the Injector Holes Leaking: Subsequent Work on
Cylinder Head (180/18)
Change overview:
Version
Date
Change
0
12/02/2019
First publication
1
01/08/2021
Checking for leaks at the solenoid hydraulic valve for valve lift
control is no longer required
2
01/16/2021
Work procedure under Step 2.1 adapted.
3
02/21/2023
Order types added, invoicing updated
4
07/13/2023
Order types added
Vehicle Type:
Cayenne (9YA) / Cayenne Coupé (9YB) / Cayenne E-Hybrid (9YA) / Cayenne E-Hybrid Coupé
(9YB) / Cayenne S (9YA) / Cayenne S Coupé (9YB)
Model Year:
As of 2018
Concerns:
Cylinder head cover
Cause:
Complaint about injector hole leaks
Information
•
Due to a batch error in the casting procedure there may be cast residue in the cylinder head cover
sealing groove.
•
This cast residue may be the reason for leaks in the injector holes.
In the event of a complaint, the corresponding position of the leak(s) must be located before doing any
other work and then rectified on a case-by-case basis, see section “Work procedure”.
AfterSales
July 13, 2023
Page 1 of 5
1
Service
Technical Information
ENU 180/18
1582
Work Procedure: –
Cylinder head cover component overview:
Cylinder head cover component overview
1
– Insulation on top of cylinder head
cover
2
– Insulation on bottom of cylinder
head cover
3
– Solenoid hydraulic valve for valve
lift adjustment
4
– Cylinder head cover
Information
•
Other electric plug connections and line guides must be disconnected to remove the cylinder head
cover sound insulation.
1
Identify the cause of the leak(s):
1.1
Remove air filter housing, see  Workshop Manual '242519 Removing and installing air filter
housing'.
1.2
Visually check whether both cylinder head covers have leaks, then continue on the relevant
cylinder head with  1.3.
1.3
Remove insulation on top of the cylinder head cover.
Information
If the insulation on the top of the cylinder head cover is already soaked with oil, it must be
replaced.
2
July 13, 2023
Page 2 of 5
Subsequent work on cylinder head:
2.1
Remove fuel collection pipe and fuel injectors on the affected cylinder head, see 
Workshop Manual '243019 Removing and installing fuel collection pipe (V6 Turbo)' and 
Workshop Manual '244019 Removing and installing fuel injector'.
2.2
Remove insulation on bottom of the cylinder head cover.
2.3
Identify the affected cylinder(s) by a visual inspection:
AfterSales
Service
Technical Information
2.3.1
180/18 ENU
1582
1
Oil must have collected in the vicinity of the injector of the affected cylinder and the
insulation on the bottom of the cylinder head cover should be fully soaked.
 Fault type 2: Cylinder head cover
leaking
2.3.2
If all affected cylinders are identified, make a note of them and
continue with  2.4.
2.4
To remove cylinder head cover and dispose
of old seal, see  Workshop Manual '158219
Removing and installing cylinder head cover
(V6 turbo)'.
2.5
Clean cylinder head cover.
2.6
Fault type 2: Cylinder head cover leaking
Check the sealing groove ( Cylinder head
cover sealing groove -1-) of the cylinder head cover visually. Be particularly meticulous when
doing this especially in the vicinity of the affected cylinder.
2.7
Carefully remove any cast residue ( Cylinder head cover sealing groove -2-) using a small
flat screwdriver, ensuring that the sealing groove is not damaged. There must be no more
cast residue in the sealing groove after machining ( Cylinder head cover sealing groove
-3-).
2.8
To install a new seal on the cylinder head cover, see  Workshop Manual '158219 Removing
and installing cylinder head cover (V6 turbo)'.
2.9
Replace and install the insulation on the bottom of the cylinder head cover.
2.10
Install fuel collection pipe, see  Workshop Manual '243019 Removing and installing fuel
collection pipe (V6 Turbo)'.
AfterSales
July 13, 2023
Page 3 of 5
1
Service
Technical Information
ENU 180/18
1582
Cylinder head cover sealing groove
3
Subsequent work:
3.1
Install insulation on top of the cylinder head cover.
3.2
Install air filter housing, see  Workshop Manual '242519 Removing and installing air filter
housing'.
Labor position and PCSS encryption
Labor position:
I No.
APOS
Labor operation
15824912
Reworking cylinder head cover cylinders 1–3
15824911
Reworking cylinder head cover cylinders 4–6
15824914
Reworking cylinder head cover cylinders 1–3
15824913
Reworking cylinder head cover cylinders 4–6
PCSS encryption:
Location (FES5)
15800
Cylinder head cover seal
Damage type (SA4)
5041
Oil/grease leak
July 13, 2023
Page 4 of 5
AfterSales
Service
Technical Information
180/18 ENU
1582
1
Labor position and PCSS encryption
Labor position:
I No.
APOS
Labor operation
15824922
Reworking cylinder head cover cylinders 1–3
15824921
Reworking cylinder head cover cylinders 4–6
15824924
Reworking cylinder head cover cylinders 1–3
15824923
Reworking cylinder head cover cylinders 4–6
PCSS encryption:
Location (FES5)
15800
Cylinder head cover seal
Damage type (SA4)
5041
Oil/grease leak
Labor position and PCSS encryption
Labor position:
I No.
APOS
Labor operation
15824912
Reworking cylinder head cover cylinders 1–3
15824911
Reworking cylinder head cover cylinders 4–6
15824924
Reworking cylinder head cover cylinders 1–3
15824923
Reworking cylinder head cover cylinders 4–6
PCSS encryption:
Location (FES5)
15800
Cylinder head cover seal
Damage type (SA4)
5041
Oil/grease leak
Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training
courses. They are written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special
tools may be necessary in order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the
safe operation of your vehicle, and may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and
safely. Part numbers listed in these bulletins are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a
discrepancy, the work procedures in the PIWIS Tester are the ones that must be followed.
© 2023 Porsche Cars North America, Inc.
AfterSales
July 13, 2023
Page 5 of 5