122-V9Y4C-12

Service
Technical Information
147/18 ENU
1001
1
Complaint - Rattling Noise From Around The Oil Pump-Crankshaft Drive: Observe
Specifications (147/18)
Vehicle Type:
911 GT3 (991)/911 GT3 RS
Model Year:
As of 2018
Subject:
Engine
Concern:
Information
•
Engines are being replaced or attempts at repairs due to complaints about noise coming
from around the oil pump/crank drive.
•
The engines, for which complaints were received and which were replaced, were examined on the
test stand.
 In the event of a customer complaint, the noise in question must be compared with
the noise in the sound file before doing any other work, see PIWIS information system 
1001_147_18_Soundfile and 'Procedure' section (in this Technical Information).
Following analysis of the queried rattling noise, we can clarify the following points:
•
It is a specific noise from the engine mechanicals,
•
has no effect on correct engine operation and
•
can occur on every 911 GT3/911 GT3 RS with 4.0-liter engine from model year 2018.
 Replacing the engine is not justified in the event of a complaint about this noise.
Work
Procedure:
CAUTION
Hot components
•
Risk of burns

Let hot components cool down.

Wear personal protective gear.
Listen to the noise coming from the vehicle and compare it with the recording in the sound file.
To document the problem in PQIS, record the noise and attach the sound file to the PQIS job.
1
Remove cover for rear underbody, see  Workshop Manual '519419 Removing and installing cover
for rear underbody'
AfterSales
Nov 19, 2018
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Service
1001
ENU
2
The following conditions must be met in order to compare the noise coming from the vehicle:
•
•
•
3
Technical Information
147/18
The engine oil temperature is approx. 194° F (90° C)  engine is at operating temperature.
The measurement is taken at a distance of approx. 1 meter straight under the center of the oil
guide module.
The engine is running at idle speed  revs are increased to 2,000 rpm  revs oscillate
between 2,000 and 2,500 rpm  revs drop to idle speed.
Compare the noise with the stored sound file (see PIWIS information system 
1001_147_18_Soundfile).
If the noise is the same, inform the customer accordingly.
4
Invoicing:
Install cover for rear underbody, see  Workshop Manual '519419 Removing and installing cover
for rear underbody'
The work involved is invoiced under the labor operation:
APOS
Labour operation
I No.
51941900
Removing and installing rear covers
For invoicing and documentation using PQIS, enter the following coding:
Location (FES5)
10010
Engine
Damage type (SA4)
2021
clanking, whirring
References:
 Workshop Manual '519419 Removing and installing cover for rear underbody'
Attachment:
MA177 mp3 Sound File
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.
© 2018 Porsche Cars North America, Inc.
Nov 19, 2018
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