2064776/2
Service Bulletin Details
Public Details for: 2064776/2
V8 kovomo - engine misfires - engine management light illuminated within the dip. Customer statement / workshop findings: - engine misfiring - engine running rough (not refined) - engine misfire dtc??A?A?S evident - engine management l
Models from 2022
2022 BENTLEY BENTAYGA |
2022 BENTLEY CONTINENTAL GT |
2022 BENTLEY CONTINENTAL GTC |
2022 BENTLEY FLYING SPUR |
Models from 2021
2021 BENTLEY BENTAYGA |
2021 BENTLEY CONTINENTAL GT |
2021 BENTLEY CONTINENTAL GTC |
2021 BENTLEY FLYING SPUR |
Models from 2019
2019 BENTLEY BENTAYGA |
Technical product information V8 Kovomo - Engine misfires - Engine management light illuminated within the DIP Russische Föderation (5RU),Australia E04 Bentley rest Asia and Australia (6E04),China 796 VW Import Comp. Ltd (Vico), Beijing (6796),Germany E02 Bentley rest Europe (6E02),Japan E03 Bentley Japan (6E03),Korea, (South) E08 Bentley South Korea (6E08),United Arab Emirates E06 Bentley Middle East and Africa (6E06),United Kingdom E01 Bentley UK (6E01),United States E05 Bentley USA and rest America (6E05) Bentley Topic Market area Brand Transaction 2064776/2 No. Level EH Status Approval Release date New customer code Object of complaint Complaint type Position engine -> engine operation -> engine refinement functionality -> misfire engine -> emission control control units, services engine -> engine operation -> power development -> engine power functionality -> uneven engine -> engine operation -> cylinder management functionality -> without function / defect Vehicle data V8 Kovomo engine Sales types Type 3S32CB 3S32CB 3S32CB 3S42CB 3S42CB 3S42CB 4V14D9 4V14D9 4V14D9 4V14D9 ZG22CB ZG22CB MY 2020 2021 2022 2020 2021 2022 2019 2020 2021 2022 2021 2022 Brand Designation Engine code E * E * E * E * E * E * E * E * E * E * E * E * Documents Document name master.xml Gearbox code * * * * * * * * * * * * Final drive code * * * * * * * * * * * * Technical product information V8 Kovomo - Engine misfires - Engine management light illuminated within the DIP Transaction No.: 2064776/2 Customer statement / workshop findings • Engine misfiring • Engine running rough (not refined) • Engine misfire DTC’s evident • Engine management light illuminated within the DIP • Knocking noise from the cylinder head (NOTE: The noise can be evident on either bank) IMPORTANT: The symptoms described are typically evident during early life stages of vehicle use (between 100Km and 250Km) Technical background Refer to the Measure section of this TPI in the event the symptoms are as described Production change Not applicable Measure Compression test (All 8 cylinders) 1) Ensure all 8 cylinders are compression tested, the results MUST be photographed and recorded IMPORTANT: This action is an essential element of the investigation Cylinder leakage test (All 8 cylinders) 2) Ensure all 8 cylinders are leak tested, the results MUST be photographed and recorded IMPORTANT: This action is an essential element of the investigation Once a cylinder has been identified as having low compression and/or cylinder leakage issues, the operative MUST conduct the remaining steps to completion NOTE: In the event that the compression and leak down tests show no obvious issues and the results for each cylinder are to specification And Misfires are still evident, please raise a new DISS query or respond via the already open DISS query IMPORTANT: Await feedback from product support before conducting any further work 3) Referring to Rep.Gr 27 - Disconnect the battery The next part of the process requires the engine rotating by hand, please ensure the engine is rotated in a clockwise direction (Normal direction of rotation) NOTE: A second operative is required to manually rotate the engine clockwise whilst the valve operation of the suspected cylinder is closely monitored, a borescope is required to check the operation of each valve and piston surface condition within the suspected cylinder 4) Whilst the engine is rotated by hand - Record a clear video capturing the operation of each valve from the suspected cylinder IMPORTANT: Ensure any irregular valve operation is clearly captured within the video • Using the borescope the operative must check for any signs of piston to valve contact and piston related damage • Referring to the applicable Rep.Gr - Remove the CDA solenoid which operates the CDA of the suspected cylinder • Using the borescope - Inspect inside the CDA solenoid orifice, check for any signs of broken valve spring(s) IMPORTANT: Where possible capture photos of valve spring(s) TIP: In the event that the valve spring cannot be inspected through the CDA solenoid orifice, the operative should raise a new DISS query or respond via an already open query 5) On completion of the diagnosis process, the operative should raise a new DISS query or respond via an already open query ensuring all requested information is attached as follows: • Clear video and photos of valve operation from the suspected cylinder • Clear video and photos showing piston to valve contact/piston related damage from the suspected cylinder • Clear video and photos of any broken valve spring(s) VERY IMPORTANT: Await feedback from Product support before conducting any further work In the event the DISS query requests the operative to replace the engine, after removal of the original engine the operative MUST conduct the following: • Remove the affected cylinder head IMPORTANT: DO NOT discard the cylinder head as this may be requested back for analysis as per the normal parts return process The remaining part of the engine should be discarded as per all local environmental guidelines • Referring to Figure 1 - Take clear photos of the broken valve spring (from the affected cylinder head only) VERY IMPORTANT: Ensure the photos show the location in which the valve spring is broken (ARROW) the various paint markings should also be captured Figure 1 • Attach all photos to the open DISS query • Attach the new replacement engine number to the DISS query Warranty accounting instructions In cases where the engine is replaced for this complaint and the cylinder head(s) are requested to be removed and returned to Crewe, the following additional labour time may be claimed as part of the engine replacement claim Bentayga Time to remove Bank 1 cylinder head Labour Labour operation code 15 70 21 99 Time 270 TU Time to remove Bank 2 cylinder head Labour Labour operation code 15 70 21 99 Time 220 TU Time to remove Bank 1 and Bank 2 cylinder head Labour operation code 15 70 21 99 Time 350 TU New GT/GTC and New Flying Spur Time to remove Bank 1 cylinder head Labour Labour operation code 15 70 21 99 Time 300 TU Time to remove Bank 2 cylinder head Labour Labour operation code 15 70 21 99 Time 240 TU Time to remove Bank 1 and Bank 2 cylinder head Labour operation code 15 70 21 99 Time 390 TU