Noticeable Ticking noise Cold Startup Jaguar 35t
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Noticeable Ticking noise Cold Startup Jaguar 35t
Hi Guys I’m New to Jaguar Community I switched from Bmw to Jag and I noticed a ticking noise on my JAGUAR XJL 2016 72k Km 3.0 Supercharged Petrol on Startup and goes away after idling for 5 to 10 Minutes. I live in Alberta Canada and It’s pretty cold here. I don’t know if it’s normal or not I’m uploading 2 videos one Cold and after when it’s warmed up for 10 minutes Thank you for your help in Advance 
. Video Link Cold https://youtube.com/shorts/Glr8bBb9T0Y?feature=share
Warm https://youtu.be/brN6T5OotUY
. Video Link Cold https://youtube.com/shorts/Glr8bBb9T0Y?feature=shareWarm https://youtu.be/brN6T5OotUY
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Hi Guys I’m New to Jaguar Community I switched from Bmw to Jag and I noticed a ticking noise on my JAGUAR XJL 2016 72k Km 3.0 Supercharged Petrol on Startup and goes away after idling for 5 to 10 Minutes. I live in Alberta Canada and It’s pretty cold here. I don’t know if it’s normal or not I’m uploading 2 videos one Cold and after when it’s warmed up for 10 minutes Thank you for your help in Advance . Video Link Cold https://youtube.com/shorts/Glr8bBb9T0Y?feature=share
Warm https://youtu.be/brN6T5OotUY
. Video Link Cold https://youtube.com/shorts/Glr8bBb9T0Y?feature=shareWarm https://youtu.be/brN6T5OotUY
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From: Adelaide, South Australia
My best guess is timing chain noise.
This engine and the AJ133 5.0 V8 it is derived from are relatively notorious for having noisy/rattly timing chains once they get a bit older, especially on a cold start and then going away once warm. Because the chains wear after high mileage especially if subject to lots of cold starts where the oil takes a little while to properly get to them. Another cause of rattling timing chains is a maxed out chain tensioner which allows the chains to loosen up but that was fixed before 2016 and is quite rare on the AJ126.
How often do you change your oil? It is well documented that the JLR specified oil change interval of 26,000 km is way too long and causes problems such as timing chain wear due to sludge build up, and it is good practice to change the oil at least twice as often as that. And what viscosity do you use? Originally the recommended viscosity for this engine was 5W-20 (and 5W-30 for the early AJ133 V8) but in 2014 JLR change it to 0W-20 particularly for cold climates such as where you are. So if you are not already using 0W-20 you should switch to it, and also go for one that meets the ILSAC GF-6A spec.
The other common cause of a rattle on cold start is a worn SC coupler/torsion isolator but I don't think that is what I hear here.
The coupler rattle is very irregular, like marbles in a tin can, whereas what I hear here is extremely regular and rhythmic and that is why I am guessing timing chain(s).
The big tell tale of a worn SC coupler is a loud "clonk" from the top of the engine on shut down, not every time but much of the time, do you have that?
Other possible causes are a worn HP fuel pump bearing, a worn coolant pump and a worn SC belt tensioner all of which sound similar and are difficult to diagnose.
I recommend you take the car to an experienced JLR mechanic, preferably an independent not a dealership, and ask them to diagnose the cause of the rattle.
This engine and the AJ133 5.0 V8 it is derived from are relatively notorious for having noisy/rattly timing chains once they get a bit older, especially on a cold start and then going away once warm. Because the chains wear after high mileage especially if subject to lots of cold starts where the oil takes a little while to properly get to them. Another cause of rattling timing chains is a maxed out chain tensioner which allows the chains to loosen up but that was fixed before 2016 and is quite rare on the AJ126.
How often do you change your oil? It is well documented that the JLR specified oil change interval of 26,000 km is way too long and causes problems such as timing chain wear due to sludge build up, and it is good practice to change the oil at least twice as often as that. And what viscosity do you use? Originally the recommended viscosity for this engine was 5W-20 (and 5W-30 for the early AJ133 V8) but in 2014 JLR change it to 0W-20 particularly for cold climates such as where you are. So if you are not already using 0W-20 you should switch to it, and also go for one that meets the ILSAC GF-6A spec.
The other common cause of a rattle on cold start is a worn SC coupler/torsion isolator but I don't think that is what I hear here.
The coupler rattle is very irregular, like marbles in a tin can, whereas what I hear here is extremely regular and rhythmic and that is why I am guessing timing chain(s).
The big tell tale of a worn SC coupler is a loud "clonk" from the top of the engine on shut down, not every time but much of the time, do you have that?
Other possible causes are a worn HP fuel pump bearing, a worn coolant pump and a worn SC belt tensioner all of which sound similar and are difficult to diagnose.
I recommend you take the car to an experienced JLR mechanic, preferably an independent not a dealership, and ask them to diagnose the cause of the rattle.
Last edited by OzXFR; Mar 21, 2022 at 09:34 PM.
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Welcome to Jaguar Forums Jaguar XJL 2016 3.0 SUPERCHARGED
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Good to have you with us.
Enjoy the forum.
If you haven't done so already you should add your car details to your signature to help others to help you.
If you need help with getting around and using the forum follow this link for some help Forum Help
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My best guess is timing chain noise.
This engine and the AJ133 5.0 V8 it is derived from are relatively notorious for having noisy/rattly timing chains once they get a bit older, especially on a cold start and then going away once warm. Because the chains wear after high mileage especially if subject to lots of cold starts where the oil takes a little while to properly get to them. Another cause of rattling timing chains is a maxed out chain tensioner which allows the chains to loosen up but that was fixed before 2016 and is quite rare on the AJ126.
How often do you change your oil? It is well documented that the JLR specified oil change interval of 26,000 km is way too long and causes problems such as timing chain wear due to sludge build up, and it is good practice to change the oil at least twice as often as that. And what viscosity do you use? Originally the recommended viscosity for this engine was 5W-20 (and 5W-30 for the early AJ133 V8) but in 2014 JLR change it to 0W-20 particularly for cold climates such as where you are. So if you are not already using 0W-20 you should switch to it, and also go for one that meets the ILSAC GF-6A spec.
The other common cause of a rattle on cold start is a worn SC coupler/torsion isolator but I don't think that is what I hear here.
The coupler rattle is very irregular, like marbles in a tin can, whereas what I hear here is extremely regular and rhythmic and that is why I am guessing timing chain(s).
The big tell tale of a worn SC coupler is a loud "clonk" from the top of the engine on shut down, not every time but much of the time, do you have that?
Other possible causes are a worn HP fuel pump bearing, a worn coolant pump and a worn SC belt tensioner all of which sound similar and are difficult to diagnose.
I recommend you take the car to an experienced JLR mechanic, preferably an independent not a dealership, and ask them to diagnose the cause of the rattle.
This engine and the AJ133 5.0 V8 it is derived from are relatively notorious for having noisy/rattly timing chains once they get a bit older, especially on a cold start and then going away once warm. Because the chains wear after high mileage especially if subject to lots of cold starts where the oil takes a little while to properly get to them. Another cause of rattling timing chains is a maxed out chain tensioner which allows the chains to loosen up but that was fixed before 2016 and is quite rare on the AJ126.
How often do you change your oil? It is well documented that the JLR specified oil change interval of 26,000 km is way too long and causes problems such as timing chain wear due to sludge build up, and it is good practice to change the oil at least twice as often as that. And what viscosity do you use? Originally the recommended viscosity for this engine was 5W-20 (and 5W-30 for the early AJ133 V8) but in 2014 JLR change it to 0W-20 particularly for cold climates such as where you are. So if you are not already using 0W-20 you should switch to it, and also go for one that meets the ILSAC GF-6A spec.
The other common cause of a rattle on cold start is a worn SC coupler/torsion isolator but I don't think that is what I hear here.
The coupler rattle is very irregular, like marbles in a tin can, whereas what I hear here is extremely regular and rhythmic and that is why I am guessing timing chain(s).
The big tell tale of a worn SC coupler is a loud "clonk" from the top of the engine on shut down, not every time but much of the time, do you have that?
Other possible causes are a worn HP fuel pump bearing, a worn coolant pump and a worn SC belt tensioner all of which sound similar and are difficult to diagnose.
I recommend you take the car to an experienced JLR mechanic, preferably an independent not a dealership, and ask them to diagnose the cause of the rattle.
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From: Adelaide, South Australia
Good luck, I hope for your sake it is not timing chains as that is the most expensive to fix cause of all the possible causes I have listed, think at least $5,000 CAD.
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From: Durham, UK
Welcome to the forums Jaguar XJL 2016 3.0 SUPERCHARGED,
Good to have you with us.
I can see you have also created a new thread in X351 forum so I'll not add to the discussion here. You can also use the Canada Region forum by following this link https://www.jaguarforums.com/forum/canada-73/ to find other members in your region.
Please read the guidance for new members ( https://www.jaguarforums.com/forum/n...ned-up-241802/ ) which answers many of the most frequent questions about getting started.
Enjoy the forums.
Graham
Good to have you with us.
I can see you have also created a new thread in X351 forum so I'll not add to the discussion here. You can also use the Canada Region forum by following this link https://www.jaguarforums.com/forum/canada-73/ to find other members in your region.
Please read the guidance for new members ( https://www.jaguarforums.com/forum/n...ned-up-241802/ ) which answers many of the most frequent questions about getting started.
Enjoy the forums.
Graham
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From: Tehama County, California, USA
Hello,
It appears you have already encountered a couple of our Gurus who have a pretty good idea what Exactly is the problem with your car.
This is what makes this place what it is.
Welcome to the forums from ElinorB.
(';')
It appears you have already encountered a couple of our Gurus who have a pretty good idea what Exactly is the problem with your car.
This is what makes this place what it is.
Welcome to the forums from ElinorB.
(';')
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My best guess is timing chain noise.
This engine and the AJ133 5.0 V8 it is derived from are relatively notorious for having noisy/rattly timing chains once they get a bit older, especially on a cold start and then going away once warm. Because the chains wear after high mileage especially if subject to lots of cold starts where the oil takes a little while to properly get to them. Another cause of rattling timing chains is a maxed out chain tensioner which allows the chains to loosen up but that was fixed before 2016 and is quite rare on the AJ126.
How often do you change your oil? It is well documented that the JLR specified oil change interval of 26,000 km is way too long and causes problems such as timing chain wear due to sludge build up, and it is good practice to change the oil at least twice as often as that. And what viscosity do you use? Originally the recommended viscosity for this engine was 5W-20 (and 5W-30 for the early AJ133 V8) but in 2014 JLR change it to 0W-20 particularly for cold climates such as where you are. So if you are not already using 0W-20 you should switch to it, and also go for one that meets the ILSAC GF-6A spec.
The other common cause of a rattle on cold start is a worn SC coupler/torsion isolator but I don't think that is what I hear here.
The coupler rattle is very irregular, like marbles in a tin can, whereas what I hear here is extremely regular and rhythmic and that is why I am guessing timing chain(s).
The big tell tale of a worn SC coupler is a loud "clonk" from the top of the engine on shut down, not every time but much of the time, do you have that?
Other possible causes are a worn HP fuel pump bearing, a worn coolant pump and a worn SC belt tensioner all of which sound similar and are difficult to diagnose.
I recommend you take the car to an experienced JLR mechanic, preferably an independent not a dealership, and ask them to diagnose the cause of the rattle.
This engine and the AJ133 5.0 V8 it is derived from are relatively notorious for having noisy/rattly timing chains once they get a bit older, especially on a cold start and then going away once warm. Because the chains wear after high mileage especially if subject to lots of cold starts where the oil takes a little while to properly get to them. Another cause of rattling timing chains is a maxed out chain tensioner which allows the chains to loosen up but that was fixed before 2016 and is quite rare on the AJ126.
How often do you change your oil? It is well documented that the JLR specified oil change interval of 26,000 km is way too long and causes problems such as timing chain wear due to sludge build up, and it is good practice to change the oil at least twice as often as that. And what viscosity do you use? Originally the recommended viscosity for this engine was 5W-20 (and 5W-30 for the early AJ133 V8) but in 2014 JLR change it to 0W-20 particularly for cold climates such as where you are. So if you are not already using 0W-20 you should switch to it, and also go for one that meets the ILSAC GF-6A spec.
The other common cause of a rattle on cold start is a worn SC coupler/torsion isolator but I don't think that is what I hear here.
The coupler rattle is very irregular, like marbles in a tin can, whereas what I hear here is extremely regular and rhythmic and that is why I am guessing timing chain(s).
The big tell tale of a worn SC coupler is a loud "clonk" from the top of the engine on shut down, not every time but much of the time, do you have that?
Other possible causes are a worn HP fuel pump bearing, a worn coolant pump and a worn SC belt tensioner all of which sound similar and are difficult to diagnose.
I recommend you take the car to an experienced JLR mechanic, preferably an independent not a dealership, and ask them to diagnose the cause of the rattle.
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From: Adelaide, South Australia
Hey Oz, forgive me for my ignorance, but if you have slack in the timing chain and the tensioners can no longer keep the slack out, why would the noise stop after warm up? If the noise is caused by the slack, wouldn't the noise be constant? The slack doesn't go away because the engine warms up, does it? We have talked about this on many different threads and have often wondered about that.
It's just that they rattle more with a cold engine due to (relative) lack of oil.
My thinking is that if the primary cause of the rattle was loose timing chain(s) then if "medium loose" you would expect the timing to be a bit out, the engine to run poorly, and maybe a DTC or two, and if "very loose" you would expect the timing to be so far out that the chain has skipped two or more cam sprocket teeth and then valves meet pistons and your engine is toast.
I suppose it is possible to have timing chains that are loose enough to rattle when cold, quieten up when warm, and not cause problems with the timing.
It's just that the rattle in the "cold" vid sounds much more like timing chains than SC coupler to me but as I said it could be any one of several things.
Funny thing is my V6 engine has been very rattly for years, even after the SC coupler was replaced under warranty, and the owner of my preferred shop kept telling me "it's the timing chains, we get lots of those on the V6". However he is not a mechanic and he didn't actually listen to my engine, and the last time I was at the shop I asked them to check the engine rattle again and they came back with "no rattle we can hear". But I can still hear it with a cold engine and it is definitely less with a warm engine, I'm guessing they didn't have enough time to let the engine cool right down and then check. Also, because the major cause of loose timing chains on the early V8 was fixed from the get go on the V6, I suspect loose/rattly timing chains on the V6 is not all that common.
I'm now starting to think (hope!) my rattle is coolant pump or HP fuel pump, and maybe the same with the OP's rattle, although my rattle is nowhere near as bad/loud or regular/rhythmic as his.
Let's just wait and see what the OP comes back with.
Last edited by OzXFR; Mar 25, 2022 at 05:38 PM.