Jag XFR knocking noise from engine, very worrying
Discussion
Hi all,
https://youtu.be/DPbD4inUvxA
Can anyone tell me what they think the knocking noise may be? This occurred after it was serviced by a JMD last week. And the fault occurred on xmas eve.
I pulled over asap, and there was an engine management light and a "Restricted Performance" message.
AA were called out and recovered it back to Jag, they are investigating it in the next day or so. Does this sound terminal?
Thanks
https://youtu.be/DPbD4inUvxA
Can anyone tell me what they think the knocking noise may be? This occurred after it was serviced by a JMD last week. And the fault occurred on xmas eve.
I pulled over asap, and there was an engine management light and a "Restricted Performance" message.
AA were called out and recovered it back to Jag, they are investigating it in the next day or so. Does this sound terminal?
Thanks
Low oil level/pressure can cause a bearing to spin and that noise is typical in my limited experience. XFRFred said:
Its not under warranty unfortunately.
However the car was just serviced by a Jaguar main dealer last week and this occurred on xmas eve, after about 20 miles of driving.
I'd be having serious words with the service manager or dealer principle. But yes, a new engine, as you've no idea what else has been damaged, and just about to fail.However the car was just serviced by a Jaguar main dealer last week and this occurred on xmas eve, after about 20 miles of driving.
There was a similar case a couple of years ago on the Jaguar Enthusiasts forum with a low mileage XKR Convertible. As previous posters have said, getting them to admit it's their fault is the first big hurdle, but if it can be proven, then a new engine is the only sensible way forward. You never know where some of the loose particles have ended up.
Is there anyone independent who would verify that there was nothing wrong very recently and would be prepared to give evidence if necessary? Perhaps a tyre fitter or MOT man if it's old enough.
A word with a solicitor might help with wording of letters if that becomes the only way. I'm not sure of the ceiling these days for the small claims court - I think it might be £5k but this might hardly cover all costs.
I really hope you can get this sorted and can sympathise to a small extent with the plight of some garages when they get called away from one job to go to an urgent problem - no excuse for not coming clean though, if they've done something wrong with these catastrophic results.
Ian
Is there anyone independent who would verify that there was nothing wrong very recently and would be prepared to give evidence if necessary? Perhaps a tyre fitter or MOT man if it's old enough.
A word with a solicitor might help with wording of letters if that becomes the only way. I'm not sure of the ceiling these days for the small claims court - I think it might be £5k but this might hardly cover all costs.
I really hope you can get this sorted and can sympathise to a small extent with the plight of some garages when they get called away from one job to go to an urgent problem - no excuse for not coming clean though, if they've done something wrong with these catastrophic results.
Ian
I've recently had a phone call and the the workshop technician says that it could be the supercharger that's at fault, rather than the engine. Waiting to get confirmation on this, and will most likely be updated tomorrow.
Are superchargers expensive?
It seems that if this is the fault, then they have dodged a bullet and i will have to pay for a new one. Although i am worried of the possibility of fragments that may have worked their way into the engine; is that a possibility?
Are superchargers expensive?
It seems that if this is the fault, then they have dodged a bullet and i will have to pay for a new one. Although i am worried of the possibility of fragments that may have worked their way into the engine; is that a possibility?
They may be right, I have no knowledge of superchargers. However, when my son's Peugeot 306XSi ran out of oil due to a filter than came undone, the resulting damage sounded exactly like your video. Quieter (not quite absent noise) on idle and at steady low revs but a really heavy knock on load or when the throttle was blipped. One shell pair had welded and spun on the journal. The crank was reground and a full set of new, suitably sized shells fitted. The company who did the work were Naismith Engineering in SW London. They prepared engines for the short oval racers at Wimbledon Speedway circuit - when it was running that is. The cost was academic as it was a long time ago and a different car anyway. However, big end noise is generally like that. I think I would be looking to a specialist solicitor to write letter if they deny responsibility.
Do you have an itemised bill for the service? Have they changed the oil in the supercharger? And yes, they are expensive!! It seems too much of a coincidence that the problem reared its head after only 20 miles - not impossible though. Not convinced yet that they have dodged the bullet.
Ian
Ian
The oil is not routinely changed - it's a big job involving removing the supercharger (on my Daimler Super V8 anyway), i was asking in case it figured on your bill - then you would have had a lever. The only other thing that could have affected it was a supercharger belt change - but it doesn't appear on your bill and JMD would not fit 'owt for nowt'
As soon as they know for certain what the problem actually is then you can proceed. How old is the car and how many miles?
Eurojag have possibly broken a few XFR's by now so a secondhand supercharger (if that is definitely the problem) might be another possibility but a JMD would not go down that route for obvious reasons, so it would have to be an Indy.
Ian
As soon as they know for certain what the problem actually is then you can proceed. How old is the car and how many miles?
Eurojag have possibly broken a few XFR's by now so a secondhand supercharger (if that is definitely the problem) might be another possibility but a JMD would not go down that route for obvious reasons, so it would have to be an Indy.
Ian
It sounds like it's not the supercharger, as mentioned above. JMD have called me up this morning to say that the belt has been removed and there is still a sound coming from the engine. I'm assuming with the belt off, there is no action from the SC at all?
Further investigation work is being carried out, and in their favor, no cost to me. But i will not hear back from them until Tuesday now.
So it still points to the bottom end failure, which is caused due to lack of oil?
The car is 8 years old, 77K on the clock.
Further investigation work is being carried out, and in their favor, no cost to me. But i will not hear back from them until Tuesday now.
So it still points to the bottom end failure, which is caused due to lack of oil?
The car is 8 years old, 77K on the clock.
Edited by XFRFred on Friday 30th December 10:37
Mine had a new Supercharger the other week, the part was £2500, £3000+ with fitting, gaskets, coolant etc.. All covered by Jag warranty.
It didn't sound anywhere near as bad as that and I never had any warnings on the dash either!
Removing the belt completely disconnects the Supercharger from the engine, so it looks to be definitely the engine.
Major coincidence that it's happened straight after service though, hope you get a resolution.
Safe to say I renewed my warranty!
It didn't sound anywhere near as bad as that and I never had any warnings on the dash either!
Removing the belt completely disconnects the Supercharger from the engine, so it looks to be definitely the engine.
Major coincidence that it's happened straight after service though, hope you get a resolution.
Safe to say I renewed my warranty!
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