Thread: Hoses

Originally Posted by Eric SDV6SE

Watching with interest, MY11 with 220000km on the odo now, all hoses are original, except for the lower turbo to intercooler and coolant outlet (which came with a replacement top hose and the little breather leg). Have never had any hose failures on these engines, have not heard of any either.

Preventative replacement is key, just wondering how close we are cutting it...

Eric,
MY SDV6 D4 has 317,000+ kms on the clock and has wanted for nothing consequently the vehicle is in very good condition. I must admit though I have been tossing up on whether to keep the D4 or change it out. The dilemma is what would I change it out with?
The D4 is due the second timing belt etc. at 336,000km and may yet get that work done a little early. I was pondering over cooling hose replacement given that other bits and pieces will be out of the way during the timing belt work. I know that makes sense but it adds quite a bit to the cost and as always I hate spending the, nowadays, hard to come by loot!

I am hoping that someone on this forum has carried out the task and can advise!

LGM

Originally Posted by Eric SDV6SE

Watching with interest, MY11 with 220000km on the odo now, all hoses are original, except for the lower turbo to intercooler and coolant outlet (which came with a replacement top hose and the little breather leg). Have never had any hose failures on these engines, have not heard of any either.

I've had 2 so far on my MY08, neither catastrophic. First was small hose from radiator to supplementary fuel cooler radiator. Second was inlet host to EGR coolers just in behind the fan. In both cases they developed pinhole leaks. The first just dripped. The second sprayed a fine mist of coolant into the fan discharge coating everything and making it frustratingly difficult to find.

I did discuss my thoughts re cooling system hose longevity with my Land Rover service agent and was advised that they have not seen much in the way of D4 cooling system hose failures. That said, I do have one of the highest km D4's that they service.

I have summarised their comments to me below.

Changing all the hoses could cost as much as $3k, it would be cheaper if the body ever needs to come off for some other reason.


Recommend replacing the hose assembly with the thermostat in it, it’s one of the hoses where we see fail on a rare occasion.


Also the top pipe circled, due to corrosion / leaking screw which is not sold separate.


To do these with the timing belt would cost an extra $1000 approx.


What they suggested to me is shown in the screen shot they sent to me (attached). Spaghetti Junction from the look of it! As it turns out I was reminded that one hose had been replaced as a precaution due to it being 'scuffed' by the engine cover rubbing on it. That particular issue has been fixed I might add.

On occasions I have been present whilst they were doing a 'standard' service for me and watched as they pressure tested the cooling system and checked for leaks and other issues both from above and below the vehicle.

The coolant water outlet in the engine 'V' has been replaced previously, at the last timing belt change, and will be replaced again with my next timing belt change as per the the service agents advice.

I was also wondering given that I live in a rural area and my vehicle does a lot of highway Km's with the shortest trip being 13 km each way to the 'local' shops, would the fact that the engine is always getting up to full operating temperature have any bearing the hose life??

I’ve had the top screw snap and leak on the top pipe as you refer to it. Was a $30 unit from LR to replace entirely.

The left hand one is common to replace where the engine cover rubs - cut back the cover, new hose, good for a long time.

One that gets forgotten is the block outlet that’s on the side of the engine that’s plastic and prone to crumble. Pain to get to.