2050334/7

Technical product information
Topic
Market area
Brand
Transaction No.
Level
Status
Release date
Ticking noise from engine bay
Bentley: worldwide (2WBE),Hongkong-Macau (5HK)
Bentley
2050334/7
EH
Approval
New customer code
Object of complaint
Complaint type Position
engine -> induction system, charging systems, vacuum systems noise, vibration
New workshop code
Object of complaint
Complaint type
engine -> induction system, charging systems, vacuum systems -> central feed vacuum pump noise, vibration -> noise
Vehicle data
Bentayga W12 - New Continental GT - New Continental GTC
Sales types
Type
3S31BB
3S31BB
3S31BB
3S31BB
3S31BB
3S31BB
3S41BB
3S41BB
3S41BB
3S41BB
3S41BB
4V14A9
4V14A9
4V14A9
4V14A9
4V14A9
4V14A9
4V14G9
4V14G9
4V14G9
MY
2017
2018
2019
2020
2021
2022
2018
2019
2020
2021
2022
2017
2018
2019
2020
2021
2022
2020
2021
2022
Brand Designation Engine 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
Gearbox code
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
Final drive code
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
Position
Technical product information
Ticking noise from engine bay
Transaction No.: 2050334/7
Customer statement / workshop findings
Ticking noise emanating from rear of Bank 1 cylinder head
Technical background
Noise from failed vacuum pump
Production change
N/A
Measure
A specific vacuum pump failure is known to create a ticking noise.
This ticking noise, on initial inspection, is easily misinterpreted as a fault in the valve train or fuel injector, when in reality it is more likely to be
produced by a defective vacuum pump. Therefore always ensure that this type of noise is identified precisely using a stethoscope. Specifically
use the stethoscope to check the vacuum pump located at the rear of Bank 1 cylinder head, when this is found to be the origin of the noise then
change the vacuum pump and retest.
Note: Typically no Diagnostic Trouble Codes (DTCs) or other symptoms are experienced by the customer with this failure