ryan_1993

ryan_1993

Active Member
Morning all,

Type wrote it on my phone meant to be “1999”

Don’t know if it’s always been there or not, but since yesterday morning I noticed a very slight whiney sound when slowing down towards a junction or speeding up at higher revs.

It Sounded a little bit like slight gear box whine initially, but it also does this when parked up on drive out of gear and when just revving the engine. It’s only slight and goes away as soon as you finish the rev and there’s also no whiney sound when driving a long normally.

it sounds like it’s coming from in front of the passenger dash area to me which maybe does indicate possible turbo wear as the turbo is on that side of engine.

Don’t know if it’s anything to worry about or not she’s getting on for 24 years old this year, so perhaps just age.

just wondered if there’s anything else to try see if I can narrow it down.
 
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Check all the hoses in and out of the turbo and if you’re brave enough have a look in the turbo intake and check for end float and oil :D
 
Heavens l wouldn't worry about that, my 110 has had a slight whine for the last 80,000 miles

The gearbox whines at certain speeds and the back axle makes a moaning noise.

I changed all the oils and it was a lot better. Have you changed the gearbox transfer box and differential oils?
 
I've always found it difficult to pick out sounds on uploaded videos. So, it sounds ok to me, though I can hear a slight high pitched sound when the revs first come on.
Do what doriz suggests and have a look in the intake side of the turbo. It is extremely easy as it's just one jubilee clip to loosen. You can put your finger in and feel for movement in the turbo spindle. You'll be able to feel the centre of the spindle and the blades coming off it. There should be barely any side to side movement of the spindle/blade assembly. There could be a tiny amount of movement along the line of the spindle (end float) You could probably get a phone in there for a picture and see if there are signs of shiny metal where the blades are starting to touch the turbo casing.
That's an extremely clean 300Tdi engine in the video! How many miles has it done and in what country? I thought the TD5 replaced the 300Tdi in 1998, but I suspect LR didn't worry and built Defenders with whatever they could get hold of on the factory floor :)

EDIT
I should have said if you suspect the blades are starting to hit the casing you should stop driving immediately. The metal particles will go straight through the intercooler and in to the engine cylinders and that will be game over.
Turbos do make quite a whine anyway, but this whine is hard to hear when the intake and outflow pipes are attached. Also, as doriz said, check the hoses. The turbo to air intake manifold hose in the video looks slightly collapsed (thin at one point) As this hose is on the compressed air side of the turbo it should be under pressure (expanded). If this hose has split, it would let the whine noise out and look thin.
 
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Al2O3 said:
I've always found it difficult to pick out sounds on uploaded videos. So, it sounds ok to me, though I can hear a slight high pitched sound when the revs first come on.
Do what doriz suggests and have a look in the intake side of the turbo. It is extremely easy as it's just one jubilee clip to loosen. You can put your finger in and feel for movement in the turbo spindle. You'll be able to feel the centre of the spindle and the blades coming off it. There should be barely any side to side movement of the spindle/blade assembly. There could be a tiny amount of movement along the line of the spindle (end float) You could probably get a phone in there for a picture and see if there are signs of shiny metal where the blades are starting to touch the turbo casing.
That's an extremely clean 300Tdi engine in the video! How many miles has it done and in what country? I thought the TD5 replaced the 300Tdi in 1998, but I suspect LR didn't worry and built Defenders with whatever they could get hold of on the factory floor :)

EDIT
I should have said if you suspect the blades are starting to hit the casing you should stop driving immediately. The metal particles will go straight through the intercooler and in to the engine cylinders and that will be game over.
Turbos do make quite a whine anyway, but this whine is hard to hear when the intake and outflow pipes are attached. Also, as doriz said, check the hoses. The turbo to air intake manifold hose in the video looks slightly collapsed (thin at one point) As this hose is on the compressed air side of the turbo it should be under pressure (expanded). If this hose has split, it would let the whine noise out and look thin.
Click to expand...


Its a t-reg 300 tdi one of the last uk spec built other the overseas ROW spec 300s. She’s done 145k now

Ill check the hoses though
 
Sounds nice that engine .... I couldn't hear much, there is a slight whistle which may be the alternator ?
I would expect any Turbo issues to be a lot louder than that and not really evident at the low revs in your video.
 
I heard a bit of noise in the first bit of the video, sounded more accessories/pulley related to me. A listening stick might help you find where it's coming from
 
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