Thread: 2nd oil analysis results '04 D2a TD5.

My D2a originally took its air from the void between the outer and inner guards, sucking it from the wheel arch area. I used to have huge issues with dust swamping the air filter and a continual film of dust on the MAF.

I fixed it by making an inlet tube inside the guard void to force air to the taken from behind the headlight (forward of the engine bay area). I have had no clogged air-filter issues since. I just need to be extra careful if I go near any water crossings.

Chris

i have a snorkel, but i also do a lot of country dirt road travelling, so dust is to be expected.

Another update on my saga.
All four by four have had my car now for 6 working days now and are none the wiser about the cause of my fuel dilution. They said that there are no obvious cracks in the cylinder head around the injectors. Also they said the injector washers/o rings are ok, I can confirm this because I have seen the injector spaces and the injectors. As a last ditched effort to diagnose the source of the fuel they are going to put the injectors back in and pressurise the rail and injectors and look for leaks. If this fails the way I see it I have 2 options. One is to renew all 5 injectors at a significant cost and then see if that solves the problem. Two, renew the head and all 5 injectors and be done with it. A second mortgage on the house required. If they cant find a leaky injector, I think i'll get them to put it all back together and I'll re-evaluate the situation and my finances. Can not complain about the service or compassion that the all four by four staff have provided though.
What do you fella's think.
Regards
Robbo

Accepting the "Compassion" being shown by your mechanics, they don't seem to have the LR knowledge required to fix your problem. Pretty sure someone on here will be able to point you in the direction of a true LR guy for an opinion BEFORE you start shelling out the big bucks.

Originally Posted by robbotd5

Gday all.
I've long suspected that I have had an issue with diesel in the engine oil of my 2004 Disco TD5. I have had the injector seals and washers replaced (at all 4X4 newcastle) after the first reading came back as 4.4% dilution. I was advised that the job was done and no signs of cracking (of the head) was obvious. From new the oil has always had a "diesel" smell to it but the level on the dipstick never seems to move dramaticly. After the injectors were done I changed the oil and both filters. I also changed oil brands, from Castrol Edge 5W30 (used since its first oil change and changed every 5000km) to Penrite HPR Diesel 5 5W40. I also ran an oil system flush prior to changing the oil/filters. Got the results from the second test today. It showed 6% (elevated abnornmal level) dilution after just 2853km. My question is, is it a cracked head or the injectors?
Silicon levels flagged also as a "high abnormal value" which makes sense considering that I have found dust on the upside of the air filter housing. I use Cooper filters and they are changed every 20000km. Pulled the whole assembly out and found the "ducks bill' completly blocked up with solidified dirt and debris. All this was cleaned out and the filter element renewed. Could the blocked ducks bill be preventing the hyclone thingy from doing its job?
I'm almost ready to take the thing back to all 4x4 and tell them to find the cause of these problems and FIX it.. I'm a fitter/turner by trade but I do not have the time or knowhow to pull the head off a TD5. I love my Disco but I should not be having to face these problems on a vehicle that I bought new and serviced to perfection, never thrashed, never towed anything substantial, and has been loved. Oh.... and its only got 67000km on the clock.
I want to do some performance mods to the engine (toombie!) before we take delivery of our new caravan but I need to sort these problems first. I love my Disco and I want it to be part of our family for many years.
Any feedback more than welcome.
Regards
Robbo.

Similar here, I just had oil sample come back after 9400km on the oil.

High Fuel (5%) and high Silicon (100) but no wear readings as it probably is the sealant used on engine as they say it takes a couple of oil changes to clear it out. Also low viscosity due to fuel (11.2).

The head has just been reconditioned and new head gasket. I asked about injector washes and o rings? I was assured they were replaced as they are in the head gasket kit used to assemble the engine. So not leaking in the head area.

Injector reading on the nanocom seem normal.

I do note both the service manual (5000km) and testing company say high fuel readings come from city driving and the Disco has done this mostly this service.

Any ideas from the knowledgable ones on here? Is this fairly normal seeing Land Rover says 5000 km for city driving and I've done 10,000 km.

5% fuel dilution is too high, but generally you'd see higher than normal wear metals too.

I'd get another test to monitor in another 5-10,000km.
Tests aren't always accurate either.

Out of curiosity, have you considered having the oil tested before you use it? Imagine if you are chasing a solution for a 5% reading but before the oil was even put into the engine it had a reading of 3% for argument sake? Just a thought.

Originally Posted by Jazzman

Out of curiosity, have you considered having the oil tested before you use it? Imagine if you are chasing a solution for a 5% reading but before the oil was even put into the engine it had a reading of 3% for argument sake? Just a thought.

You can have that sort of thing happen with solid contaminants (dirt) but not fuel.