Help - My Timing Chain Guide Just Broke
Started off with chain guide issue then went on to have a whole host of engine problems . his car was in and out of the dealers for months . he was lucky he had taken out extended warranty on the car , bent valves also etc etc the full works
Last edited by George05; Nov 16, 2019 at 03:25 PM.
I am unsure of the rules on here in regarding mentioning other forums. Have PM Graham but he has not got back to me yet but here is the link to the timing chains issue on a 15 XFR-S car: https://www.jaginfo.org/showthread.p...g-chain-rattle
Last edited by GGG; Nov 16, 2019 at 05:30 PM. Reason: Link OK - see my reply to your PM
Iam unsure of the rules on here in regarding mentioning other forums have PM Graham but he has not got back to me yet but here is the link to the timing chains issue on a 15 xfr-s car . delete if appropriate . https://www.jaginfo.org/showthread.p...g-chain-rattle
Update - Long story short - Brought my 2012 Jaguar XFR to Jaguar in Carlsbad in Mid- November. They performed an initial test and came back that it is a "timing chain guide/tensioner issue." Prior to this, I was on the phone with Jaguar Customer Care on four occasions throughout this diagnostic visit. The Customer Care representative was very nice and pleasant for the first three conversations. The last conversation was like ..."sorry, if it is an issue of the timing chain, we don't find it in our interest to pursue support of your vehicle given the age and mileage on the vehicle." At that time, the initial diagnosis was timing guides/tensioner replacement at the dealer for $9k. So I had the car towed to an independent shop in Carlsbad and they have had it for a week. Just yesterday I received notice that my issues are beyond the timing guides and in-fact I have bent valves on at least two of the cylinders. My timing was out of alignment by around 15 degrees or more and through leak-down, compression tests and visual (valves covers off) there is apparent valve damage. Now, the independent shop is quoting me around $9k for the heads to be pulled with new valves (limited to the damaged ones) and a timing job. The alternative is a brand new refurbished engines ($9500) and I haven't been quoted directly on labor but assume an additional $4k to that. So....my advice is to run out and replace your chain, guides, tensioners because Customer Care from Jaguar is WORTHLESS or evaluate your situation on how long you will stay in your vehicle. I have 100,100 miles on my 2012 XFR and have maintained it above and beyond the standard. Also, I have contacted around 10 independents locally and they all say this is a big issue with this engine across all platforms. The consensus about the timing chain and guide replacement for cost is $5k.
Curious if anyone knew a better resource for finding refurbished engines? As mentioned, one independent shop quoted me $9500 for an engine but was hopeful to work directly with a source for a lower cost.
Curious if anyone knew a better resource for finding refurbished engines? As mentioned, one independent shop quoted me $9500 for an engine but was hopeful to work directly with a source for a lower cost.
To make a serious understatement that sucks!
A couple of options. Cut you losses and sell car for what you can get.
Look for a used engine that was manufactured 2013 or later so will likely have updated tensioners for around $4,500 and have that installed by an inde.
A couple of options. Cut you losses and sell car for what you can get.
Look for a used engine that was manufactured 2013 or later so will likely have updated tensioners for around $4,500 and have that installed by an inde.
sorry, if it is an issue of the timing chain, we don't find it in our interest to pursue support of your vehicle given the age and mileage on the vehicle.
I guess one of the reasons used 5.0 litre engines are commanding a premium is the unavailability of service parts from JLR for many of the internal engine block components such as crankshafts, connecting rods and pistons.
We have some guys on the XJ forum that have the old style tensioner on a 2013, suggesting not all 2013s are safe. I would err toward a 2014 or an older model that had the timing chain tensioners done.
I have heard the opposite about oil weight, that the 0w-20 is supposed to save the tensioners by providing oil pressure to the tensioners faster.
I have heard the opposite about oil weight, that the 0w-20 is supposed to save the tensioners by providing oil pressure to the tensioners faster.
Ouch. And so the Jaguar world slowly catches up with the Land Rover world where they all are well familiar with these issues. Throw in the increasing prices, or - in some cases - flat out unavailability of 6.35mm pitch timing parts and this has the potential to turn into a real problem. We will reach a point with a lot of earlier XFs being scrapped because the engines aren't worth repairing because they need a full timing gear swap to 8.0mm. Good news in terms of second-hand parts prices for the rest of us, I guess...
Thank you for the condolences. To your knowledge, has anyone successfully sold a Jaguar for "As-is?" I unfortunately do not have the time to part it out. Also, I have been on the hunt for a used engine in that price range, but most prices seem to be around $7k - 9k for a used engine with 80-100k miles. 

This is a bit of a side note here.
The newer Ford 2.7 and 3.5 twin turbo engines have some failures relating to the stretching of the timing chain which is attributed to using the wrong oil and or waiting
too long to change the oil.
The chain stretches to the point where the slack take up plunger extends to the fullest and cannot take up the excess slack.
By waiting too long I mean adhering to the oil manufacturers recommendations.
I am in the market for a new truck so have been doing a lot of research.
At first I really liked the look of these Ford ECO boost engines especially the twin turbo charged.
Now I am really looking at the 5.0 NA engine.
Which brings me to another point.
The JLR and Ford 5.0 engines are different engines but how different?
The Ford 5.0 engine is plentiful used and cheap by comparison to the JLR engines however they are all NA not supercharged.
IF my Rover engine blew up I would seriously look at a NA Ford 5.0 engine as a replacement IF a ZF6HP28 tranny would bolt up which I think it would.
I am sure someone will point out something that would make this a no go?
The newer Ford 2.7 and 3.5 twin turbo engines have some failures relating to the stretching of the timing chain which is attributed to using the wrong oil and or waiting
too long to change the oil.
The chain stretches to the point where the slack take up plunger extends to the fullest and cannot take up the excess slack.
By waiting too long I mean adhering to the oil manufacturers recommendations.
I am in the market for a new truck so have been doing a lot of research.
At first I really liked the look of these Ford ECO boost engines especially the twin turbo charged.
Now I am really looking at the 5.0 NA engine.
Which brings me to another point.
The JLR and Ford 5.0 engines are different engines but how different?
The Ford 5.0 engine is plentiful used and cheap by comparison to the JLR engines however they are all NA not supercharged.
IF my Rover engine blew up I would seriously look at a NA Ford 5.0 engine as a replacement IF a ZF6HP28 tranny would bolt up which I think it would.
I am sure someone will point out something that would make this a no go?
IF it could then a 2014-early 2015 Ford 5.0 engine might be VERY similar?:
When Ford sold Land Rover and Jaguar to Tata Motors in 2008, the new company, Jaguar Land Rover, relied on Ford for all its engines. Many of those old connections are now broken since JLR opened its new engine plant in late 2015 and began producing its own Ingenium inline four-cylinder diesel and gasoline engines
Last edited by jackra_1; Dec 15, 2019 at 08:20 AM.
[QUOTE=jackra_1;2166882]
IF it could then a 2014-early 2015 Ford 5.0 engine might be VERY similar?:
I believe the limiting factor on an engine swap, from a different manufacturer, is the communication of the electronics. The early Jags have successfully swapped LS engines but they have no where near the electronics of the modern Jag. I would love to do a 2JZ turbo engine swap
IF it could then a 2014-early 2015 Ford 5.0 engine might be VERY similar?:
I believe the limiting factor on an engine swap, from a different manufacturer, is the communication of the electronics. The early Jags have successfully swapped LS engines but they have no where near the electronics of the modern Jag. I would love to do a 2JZ turbo engine swap

I’ve read that the SC and NA engines are different enough to make it a prohibitively expensive to swap between the two.
That being said I once drove my SC engine without the supercharger belt connected for 2 months without issue (less power obviously, but no engine light). So there may be someway to fool the SC car into taking a NA engine if you leave the SC disconnected.
All the best.
That being said I once drove my SC engine without the supercharger belt connected for 2 months without issue (less power obviously, but no engine light). So there may be someway to fool the SC car into taking a NA engine if you leave the SC disconnected.
All the best.








