hey Guys I get a pretty noticeable noise in my '17 R, loudest from underside of the passenger side of the car. Would love to get some opinions on this to see if people think it is normal or something on the road out... I'd describe it as a "tinny tick" ha. The noise doesn't subside once the engine warms up and varies with RPM. I know these engines are noisy but this just sounds off to me (I have no comparison and haven't seen a forum post with a similar noise).

I've asked the dealer several times and they acknowledge a bit of a noise but state they can't identify the source. Had a ride-along with a service tech and he mentioned fuel pumps but again they haven't committed to that as the cause or suggested a fix. quick vid attached...

 

Heat shield touching the exhaust?

 

Rock between the front brake rotor and the shield? Varies with RPM or speed?



pat

 

Unlikely to be this as the R front brakes - 380 mm - don't have much of a splash shield at all, unlike the rears which have a substantial shield almost all the way around.
The 380 mm brakes have a tiny/vestigial "shield" some 100 mm x 50 mm at the bottom which as far as I can tell does SFA and I have no idea what it is meant to do.
Maybe the same with the 355 mm front brakes, dunno.

 

Couple of updates on my noise and looking for opinions... so the car has been out of Jaguar warranty since April (now have Maxcare extended), after that I've had it back to dealer 2-3 times for various issues (SOS System resulting in speaker replaced, front diff went and replaced, door handle broke and needed replaced). Each time I ask them about this noise I am hearing (I've asked them about 10 times!)

In my most recent trip, they said all of a sudden they do hear the noise and it's coming from the top of the engine... they recommend a tear down at $14k to diagnose - of course this would be my responsibility and IF a problem is found they can TRY to claim the warranty company - frustrating but I think standard practice...

Took the car elsewhere for a 2nd opinion really like the vibe of the shop, owner was super helpful and explained a lot. he said he also hears top engine noise, suspects timing chain related. he said I could do tear down, or he could remove valve covers for around $2k to try and get a peek and determine if something is going on and get enough support to file warranty claim... does that seem like a plausible thing that would allow him to diagnose a timing chain issue?

He told me it's OK to still drive the car and if it starts to fail it would likely be noticeable by some misfiring etc. and if that happens stop driving and tow it then can immediately make a warranty claim - does this seem like sound advice?

thanks
Iain

 

Yes,

I base this on the overall credibility of this guy. He easily could have done what the dealer $ugge$sted but instead gave you his informed opinion.

My indy guys give a similar vibe. No free tea/cookies in the waiting room just credible dudes who work on cars.

My car knowledge is somewhere between diddly and squat but I do read people.

 

The very noisy gear driven mechanical HPFP's are mounted on the passenger side of the engine just below the cam cover. Is it possible the noise might be from the pumps?
They are hard to get too and the noise is normal.

Hard to tell from your recording but any DI engine sounds like a car of marbles to me? Is this your first DI engine?
So not sure there is a problem?
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Heard back from mechanic today, again was very helpful and as opposed to full tear down he removed the valve assembly on the passenger side to inspect that side of the top engine since the noise was coming from there. He states "found exhaust camshaft valve bucket damaged" and provided the attached pic. Well hopefully this will remedy the noise that's been bugging me once addressed and hopefully will be covered under extended warranty

Question: since he'll need to get into the engine to fix this - are there any preventative/proactive maintenance items i should consider (I've asked him same question but keen to get input from the forum).

thanks!
Iain

 

If you haven't already, it's a no-brainer to install the aluminum cooling pipes with the engine disassembled. There's also a new aluminum thermostat housing that would be simple to upgrade as well at this point. Finally, you may want to look into a solid supercharger coupling to replace the spring-coupling as well. All these issues are well documented here if you need a bit more info.

 

Thanks - this sounds like great advice!! will mention this for sure.

 

Will the cam have to be replaced ?

 

Nearly certain a new cam shaft will be needed. You can see deep wear on the bad cam.

 

Burnibus: How many miles on the car?
Any likely cause for the damage?

 

Yep, mechanic says camshaft replacement for sure. Vehicle has just passed the 50k mark, around 50,300 miles when it went back into the garage.

 

I wonder if the ground up metal has or will cause additional damage that is not yet apparent?
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Yeah i hope nothing additional, as noted the mechanic has only removed the valve cover to get this far and find evidence to support a warranty claim - as he cracks on with the repair some other wear/damage might be uncovered. I'm not very mechanically minded, so not really crystal clear to me which parts are worn/damaged and how seriously. I asked specifically about the hole in the cam bucket and he said most likely it was blown out exhaust or broken down within the engine - so hopefully no significant damage... hopefully!

 

Closing the loop on my thread. After about a month I have the car back, the repair was finally approved and completed under warranty. In the end further tear down was insisted upon by the warranty company to remove the cylinder head, after that was done valve to piston contact was confirmed and the exhaust valve was not seated. The repair was approved, all-in-all a roughly $10k repair bill (based on estimate I received, sure the warranty co paid less). Repair ending up consisting of replacement of cylinder head, camshaft, damaged tappet, valve spring and exhaust value and lots of other sundries. It was suggested and I agreed to replace some timing chain/tensioner components out of pocket whilst they were in there. the car is running great and no more ticking which is awesome.

Shop confirmed i have the updated coolant pipes. Did warn me that they thought they heard a slight rattle from the SC coupler.

The front suspension was repaired at the same time under warranty which has also made a massive difference to the feel of the car. feels brand new!

For anyone located in the metro Atlanta area I would highly recommend Import Auto Repair - my experience was top notch. Link here

 

 

Thanks for the update. Did they not suggest upgrading the SC coupler while it was off? I think a slight rattle is normal; only when it gets loud is that evidence that the spring is chewing things up.

 

Yeah, I wondered same. They know I'm under warranty until Apr 2026 or 100k miles, so if it goes I'll be back. I don't hear any sign of a rattle, although I am half deaf.

edit: actually, now I think about it, they did not detect this before, it was called out following the test drive after the repairs were complete.