Slipped timing chain - '12 XKR
#22
06-10-2022, 02:02 PM
Veteran Member
This is a good summary of the issues with some interesting observations about oil changes: Timing Chain Problems 2010-newer Jaguar Land Rover AJ V8 Engines - JE Robison Service - Bosch Car Service Specialists ? the blog
#23
06-14-2022, 05:01 AM
Well - the car is back, it feels lovely to drive and everything feels smooth. The specialist garage have done a great job. Its been over 1 month in the garage and the final bill has been eye watering. On top of the timing chain replacement we have also had: new head cylinders, new supercharger clutch, new injectors, new coils, new spark plugs, new water pump (also headlamp washer jets, and right headlamp bulb - unrelated). - plus a whole list of replacement smaller parts/seals during the engine strip down. Some of these parts were directly related and necessary, some were things that needed doing and made sense to do given the extent of effort already gone in to exposing the engine.
The labour on top of that was done a 20% discount but still added up to a huge cost - all in, best part of 50% of the value of the car. I am trying to make myself feel better by telling myself that I have now at least got a very well serviced and refreshed engine, and the most expensive thing that could really go wrong with this car has happened, been fixed and shouldn't happen again.
My lesson to all XKR drivers is that if you have even the slightest hint of a rattle at idle then replace it straight away. Mine really wasn't bad at all, I had just put the noise down to it being an XKR rather than XK (which i have driven before) and thought the slightly noisy idle was just the supercharger belt. Painfully expensive experience.
The labour on top of that was done a 20% discount but still added up to a huge cost - all in, best part of 50% of the value of the car. I am trying to make myself feel better by telling myself that I have now at least got a very well serviced and refreshed engine, and the most expensive thing that could really go wrong with this car has happened, been fixed and shouldn't happen again.
My lesson to all XKR drivers is that if you have even the slightest hint of a rattle at idle then replace it straight away. Mine really wasn't bad at all, I had just put the noise down to it being an XKR rather than XK (which i have driven before) and thought the slightly noisy idle was just the supercharger belt. Painfully expensive experience.
#24
06-14-2022, 07:59 AM
Veteran Member
#25
06-14-2022, 02:57 PM
Veteran Member
Well - the car is back, it feels lovely to drive and everything feels smooth. The specialist garage have done a great job. Its been over 1 month in the garage and the final bill has been eye watering. On top of the timing chain replacement we have also had: new head cylinders, new supercharger clutch, new injectors, new coils, new spark plugs, new water pump (also headlamp washer jets, and right headlamp bulb - unrelated). - plus a whole list of replacement smaller parts/seals during the engine strip down. Some of these parts were directly related and necessary, some were things that needed doing and made sense to do given the extent of effort already gone in to exposing the engine.
The labour on top of that was done a 20% discount but still added up to a huge cost - all in, best part of 50% of the value of the car. I am trying to make myself feel better by telling myself that I have now at least got a very well serviced and refreshed engine, and the most expensive thing that could really go wrong with this car has happened, been fixed and shouldn't happen again.
My lesson to all XKR drivers is that if you have even the slightest hint of a rattle at idle then replace it straight away. Mine really wasn't bad at all, I had just put the noise down to it being an XKR rather than XK (which i have driven before) and thought the slightly noisy idle was just the supercharger belt. Painfully expensive experience.
The labour on top of that was done a 20% discount but still added up to a huge cost - all in, best part of 50% of the value of the car. I am trying to make myself feel better by telling myself that I have now at least got a very well serviced and refreshed engine, and the most expensive thing that could really go wrong with this car has happened, been fixed and shouldn't happen again.
My lesson to all XKR drivers is that if you have even the slightest hint of a rattle at idle then replace it straight away. Mine really wasn't bad at all, I had just put the noise down to it being an XKR rather than XK (which i have driven before) and thought the slightly noisy idle was just the supercharger belt. Painfully expensive experience.
Aren't both the 5.0 XKR and XK equally affected with the timing chain issue?
#27
06-15-2022, 05:50 AM
Senior Member
I posted on here a month ago about my very sad Jag (5.0L S/C 70k) - my saga has continued to worsen. Whilst driving about a month ago the engine suddenly when into limited performance mode. I pulled over it was extremely unhappy - car rocking side to side, rough idle and then cutting out.
Long story short - the first garage I took it too tried replacing all the spark plugs and coils, checked for an air leak, checked the catalytic converters, checked the fuel line... It then went to a Jaguar / Land Rover specialist who diagnosed a slipped timing chain.
I have now had the timing chain replaced with the newer tensioners but sadly the car is still unhappy, and the specialist has told me that I am sadly one of the very unlucky ones for which pistons have met valves. I am told the options are: 1) replace the engine with a refurbished or used one. 2) An attempted repair of pistons and valves (high labour time, and still risk that repair won't work), 3) possibly sell the car to the garage and be done with it.
Waiting for quotes for each. Any thoughts? Has anyone else managed to repair one of these engines after that has happened?
Long story short - the first garage I took it too tried replacing all the spark plugs and coils, checked for an air leak, checked the catalytic converters, checked the fuel line... It then went to a Jaguar / Land Rover specialist who diagnosed a slipped timing chain.
I have now had the timing chain replaced with the newer tensioners but sadly the car is still unhappy, and the specialist has told me that I am sadly one of the very unlucky ones for which pistons have met valves. I am told the options are: 1) replace the engine with a refurbished or used one. 2) An attempted repair of pistons and valves (high labour time, and still risk that repair won't work), 3) possibly sell the car to the garage and be done with it.
Waiting for quotes for each. Any thoughts? Has anyone else managed to repair one of these engines after that has happened?
Last edited by Barry Leftwich; 06-15-2022 at 05:56 AM.
#29
06-15-2022, 07:01 AM
Senior Member
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