2051187.1

Technical product information
Topic
Market area
Brand
Transaction No.
Level
Status
Release date
Poor Engine Running Complaints (Misfires) Petrol Engines Only
Bentley: worldwide (2WBE),Hongkong-Macau (5HK)
Bentley
2051187/1
EH
Approval
New customer code
Object of complaint
Complaint type
engine -> engine operation -> power development -> throttle response functionality -> misfire
New workshop code
Object of complaint
Complaint type
Position
engine -> operation, engine control -> engine control unit functionality -> misfire
Vehicle data
All Petrol Engine Variants
Sales types
Type
****
****
****
****
****
****
****
****
****
****
****
****
****
****
****
****
****
****
****
****
MY
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
Brand Designation Engine code Gearbox code
E
*
*
E
*
*
E
*
*
E
*
*
E
*
*
E
*
*
E
*
*
E
*
*
E
*
*
E
*
*
E
*
*
E
*
*
E
*
*
E
*
*
E
*
*
E
*
*
E
*
*
E
*
*
E
*
*
E
*
*
Documents
Document name
master.xml
Final drive code
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
Position
Technical product information
Transaction No.: 2051187/1
Poor Engine Running Complaints (Misfires) Petrol Engines Only
Customer statement / workshop findings
Poor running or lack of power with possible engine warning light illuminated
Technical background
TPI to assist Retailers when diagnosing engine misfires
Production change
Measure
Confirm allcurrent OTHER applicable TPIs and complaints have been completed relating to this issue.
Upload a new Off board Diagnostic Information System log to the online system
Check if vehicle has been modified in anyway. Ensure all DTCs have been fully tested (air leaks, purge faults, mixture faults).
Complete a battery health check using VAS 6161. Reference workshop manual Battery to – Test. Is there a fault with supply voltage? Is the battery
in a serviceable state?
Carry out check on vehicle fluids: fuel, engine oil, coolant etc. Focus on correct levels, quality, look for any signs of contamination and check
customer is using correct minimum fuel octane rating (refer to fuel flap label for correct minimum grade in your region). Check the customer is using
the correct engine oil type if and when topping up engine oil level and where advised on the service schedule is using G17 fuel additive
Spark plugs; check for signs of oil or fuel wash, any damage to plug insulation and correct specification original parts used (check part number in
ETKA).
Swap spark plugs, coils or injectors (if feasible) and see if fault follows.
Electrical integrity; for all relevant DTCs check the integrity of the system, including open circuits, response and range. This includes spark plugs, coils,
injectors and ECU connection checks.
Please provide as much information as possible regarding the driving style and environmental conditions up to and at the time of the failure on the
DISS query
For any specific cylinders that are showing concerns please carry out a cylinder compression test, a cylinder leakage test and also inspect with a
borescope. Provide good quality photographs of the top of the piston, the cylinder bore and valve area. Please also provide clear individual pictures
showing spark plug condition, compression test or results and leak down test (mandatory on all DISS queries).
If a mechanical issue is suspected / confirmed then a FULL engine, all cylinders, compression and cylinder leakage data along with borescope images
must be supplied.
Graphic information accompanying your DISS submission must be of a least the quality shown in the following examples
Individual spark plug detail
Valve peripheral each cylinder
Piston crown each cylinder
Cylinder bore each cylinder
Cylinder compression results
Cylinder leak test results