LR4 5.0 Chain Guides actual problem?

[cperez]

Isnt it fair to say we are making a big deal out of something that can be evaluated through sight and sound?

What place does logic have in a forum of Land Rover owners?

 

[ttforcefed]

What place does logic have in a forum of Land Rover owners?

Hahaha. I’d understand the paranoia if it was an undetectable problem


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[avslash]

What place does logic have in a forum of Land Rover owners?

LOL. No $hit.

If we were logical we would drive 4Runners.

 

[cperez]

Hahaha. I’d understand the paranoia if it was an undetectable problem

Kidding aside, your point is well taken that it is detectable *once it happens*. The issue is that there doesn't seem to be a way of knowing when or if it will strike. It even happens in the 2013's that are fitted with the improved part. For whatever reason this puts it in a different category from other random things that can go wrong with our Rovers. Add to that the indignity of having to finger your oil spout to try to diagnose the situation, LOL.

 

[ttforcefed]

If its going to go you can hear it and you can visually inspect it - im not following u. Once you detect the sound - change the chain. Problem averted.


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[ryanjl]

Hate to be a downer, but, full disclosure, I didn't really hear much of the "telltale" signs before I had the job done under warranty in December. It was more of a moonshot to see if I could get the job done before my warranty expired at the New Year.

As it turns out, the job needed to be done (chain had stretched a little under an inch, and it had enough slop to completely wear away part of the oil jets), but I'm not sure mine was a prime candidate as symptoms go beforehand.

 

[gsxr]

Hate to be a downer, but, full disclosure, I didn't really hear much of the "telltale" signs before I had the job done ... As it turns out, the job needed to be done (chain had stretched a little under an inch, and it had enough slop to completely wear away part of the oil jets), but I'm not sure mine was a prime candidate as symptoms go beforehand.

Well THAT is depressing. I'm assuming that if there was enough play in the chain that it started wearing metal items, this would show up as a spike in wear metals via oil analysis. Good reason for me to keep shelling out for an analysis with each oil change, might be able to catch it before the damage gets out of control.

 

[ryanjl]

Well THAT is depressing. I'm assuming that if there was enough play in the chain that it started wearing metal items, this would show up as a spike in wear metals via oil analysis. Good reason for me to keep shelling out for an analysis with each oil change, might be able to catch it before the damage gets out of control.

Yeah, the mechanic showed me the oil jet that had worn and he had removed from my LR4 (the part in the top center of the pic here: https://www.roverparts.com/Parts/TCK5030) and it was kind of a shock. I'm assuming that metal would have shown up in an analysis somewhere, and I'm hoping it didn't cause any problems elsewhere down the line for me.

 

[cperez]

(chain had stretched a little under an inch, and it had enough slop to completely wear away part of the oil jets)

Holy...

 

[mpinco]

Wouldn't be surprised to see that there are multiple issues going on. Timing chain 'stretch' is likely not a tensioner issue.

"......Some of the most notorious engines for timing chain stretch include the GM High-Feature V6, Ford Modular V8 and Nissan VQ V6. All of these OEMs have stated that the lack of oil changes and use of the wrong oil causes the timing chain stretch conditions.........."

Timing chain stretch is caused by poor or low quality lubrication that wears the chain components. JLR is not the first manufacturer to have issues with the latest oil formulations and drain intervals.