Diesel in the oil

[sanbar]

First of all, a nod to the silver 2a with the AULRO sticker in the Yeerung River car park on Thursday.
OK, had a few problems with the '03 2a TD5 losing power and belching black smoke above 3000rpm on the way to Marlo this week. It also seemed that the turbo waste gate was opening each time it happened.
Did a fuel top-up before we went, and fuel economy had risen to about 20L/100km and I thought nothing of it other than SWMBO's lead foot ... currently sitting on about 16L/100km.
Anyway, checked the oil level at Marlo and the dipstick is way overfilled, and oil feels soapy. From research it could be anything from a leaking fuel pressure regulator to a cracked head. Is there any way of narrowing the problem down from these symptoms?
TIA, sanbar

[Scouse]

Hopefully it'll be something as simple as leaking injector seals.

You can run the engine with the cam cover removed & have a look. Chances are that you might have to do the seals first & hope that's the fix. Have a close look at the head when the injectors are out.

[justinc]

Like Scott says, more than likely injector O rings, or possibly an injector itself leaking through the body of the solenoid. If nothing obvious, then injectors need to be removed and seals replaced. While injectors are out, carefully inspect the bore of each injector well, I have seen a crack in the head there before:(

JC

[LandyAndy]

It is an URGENT check Sanbar.
The motor can run out of control on its own diesel fumes from the sump if it is dieseling the oil.
Usually results in the destruction of the motor.
Get it looked at ASAP.
Andrew

[porgey]

Running the engine with a diesel Oil Dilution wouldn't do the engine bearings much good either. Cheers George

[sanbar]

It is an URGENT check Sanbar.


Yep, rooted the camshaft and three rocker arms. Everything else appears OK ... at the moment.

[camel_landy]

I'd suspect a cracked head... :(

M

[sanbar]

Cam shaft is still away having the hardened surfaces reinstated. Rocker arms are having new rollers fitted. Injector guys have found some sort of anomalies with the injectors. Three weeks and no car, and school starts in just over a week.
Sad thin is, even with half the head sitting on the boot floor down at the mechanic's workshop, she's still a good-looking jigger.

[sanbar]

Does anyone know of a source for injector rocker arms? Ones we were sent were rusty, and the mechanic reckons we will now have to source them overseas. That could be another bloody month.

[alien]

Does anyone know of a source for injector rocker arms? Ones we were sent were rusty, and the mechanic reckons we will now have to source them overseas. That could be another bloody month.

Try Ray,
Romsey Land Rover Service Centre at 11 Park Lane, Romsey Vic.
Phone 03 54295021

I sent a new complete assey (Shaft/rockers suit early TD5)back as wrong supplied.
He may have it or now of one.

[sanbar]

Five weeks, $4k bill, but the car is back and running like new. The mechanic even threw in the service for nothing.
I guess the *only* way you could ever pick this happening again is a weekly oil level check?

[bruiser69]

The weekly oil level check sounds like the go. Did mechanic say where diesel was leaking from?

[sanbar]

The weekly oil level check sounds like the go. Did mechanic say where diesel was leaking from?

It was an injector seal. Apparently when they go, 20,000-odd psi of pressure vents the fuel straight into the engine block.

[bruiser69]

It was an injector seal. Apparently when they go, 20,000-odd psi of pressure vents the fuel straight into the engine block.

Holy crap:o! It wouldn't take long to dilute the oil. Did you notice that fuel pump was working it's guts out or just that fuel gauge was dropping as fast as a V8?
Cheers..B

[Scouse]

Five weeks, $4k bill,


It was an injector seal. So, where did the $4000 go to?
When you posted that originally I thought it must have been a new head & injectors, not just seals.

[Blknight.aus]

the only time 20K psi of diesel makes it out of the injector is out the nozzle or if the injectors cracked. you'd know it if you had it the thing would run like a dog and it would have cut a hole in the ally.

if the top body-head seal lets go then the diesel comes out at 80psi-ish.

if the bottom or nozzle seal lets go you initially wind up with combuastion gasses heading for the fuel tank via the return and then you wind up with a run away td5 when the seal fails enough that the lift pump can push the diesel past the injector.

[sanbar]

So, where did the $4000 go to?
When you posted that originally I thought it must have been a new head & injectors, not just seals.

Pressure-testing/overhauling the injectors, replacing the injector cams and rockers, oil, labour, car hire, beer. A fair bit had to be outsourced.

[sanbar]

And the ****** thing has just done it again! Easter Sunday stuck by the Calder Fwy at Taradale. Started losing power uphill and then blew the wastegate open again on the first big towing trip since the top end was rebuilt.

[Baffle]

:(:confused::confused::(

[penno]

My motor did the same replaced the motor $15,000 later
Penno

[M&S]

I have had the same thing the last few weeks.

There was a crack in the head at No.3 injector (easy to see with the injector removed). Replaced the injector seals anyway and did an oil change as I couldn't afford a head so decided to drive home and park it up. 100miles later, diesel back in, level up.

Head changed last week, new injector seals etc, guess what, 100m later diesel in the sump.

It's booked in for "another look" on Tuesday. Either they have damaged a seal when fitting, or the new head is cracked...

...I am one unhappy trucker right now :mad:

[sanbar]

Hey, guess what? Mechanic phoned today to say a cracked head at the gallery where the No.3 injector goes in.
I suggested he check the head the first time around, and it wasn't done. He only sent the injectors away for a rebuild and cold-tested the fuel pressure regulator.
For the record, the telling sign was a sudden, noticeable loss of power up hills, with the engine struggling to get above 4000rpm. Ran fine on the flat, although acceleration was a bit sluggish. The effect was something akin to someone suddenly putting a two-tonne load on the back.
Oh, and the mechanic has gone on holidays until the end of the month, and left a note for his secretary to phone us with the news. Not happy at all.
Wondered why SWMBO sat me down with a glass of whiskey straight after dinner ...

[strangy]

Sorry just of the main topic here,
Can someone clarify the overhaul of the TD5 EUI please.

When I did the head on my D2 I was advised by LR and the Diesel mob in town that these could not be overhauled and replacement was the only option.

Is there now an option for overhaul?
Or were Sanbar's just tested and not o/hauled?

Mine are all OK but just curious.

Cheers

[sanbar]

Injectors from our rail that failed the pressure test were replaced.

[gompz]

Hi,
I have the same issue in a TD5 Defender 2000 model. I was initially drawn to the noisy fuel pump making a whirring sound and took it in for a look. They said the fuel pump will scream if air is getting in somewhere along the line. The oil sump was supposed to have 7ltrs and it had 12ltrs so well up the dip stick. $1k of investigating later, replaced the o ring seals on the injectors and looked at the head which presented no cracks and the compression test came back fine. Drove it 500kms and told to look at the dipstick, if up by 1 inch then problem still there. The fuel pump was quieter after the investigations but is now back to being noisy again. With no cracked head (or found), new o ring seals on injectors, what else could cause diesel to enter the engine?
BTW - first Land Rover and loving it but concerned I may have a serious problem

[sanbar]

Turns out our head had two cracks where the no.3 injector enters the head. One was visible, and the other only showed up when the head was warmed up.
Our mechanic has sourced an after-market head from Germany that has thicker walls around where the injectors are fitted. Anyone know anything about these?
Irony is that I sat beside a guy on a plane yesterday whose company casts heads for older vehicles, and he was quite interested in what happened to my TD5. I might courier the cracked head to him ...

[rick130]

Turns out our head had two cracks where the no.3 injector enters the head. One was visible, and the other only showed up when the head was warmed up.
Our mechanic has sourced an after-market head from Germany that has thicker walls around where the injectors are fitted. Anyone know anything about these?
Irony is that I sat beside a guy on a plane yesterday whose company casts heads for older vehicles, and he was quite interested in what happened to my TD5. I might courier the cracked head to him ...

I'd reckon quite a few TD5 owners would like to hear about the replacement heads.

[sanbar]

Picked up the Disco yesterday. Mechanic admitted a mia culpa in missing the cracked head and has only charged us for the replacement head and no labour.
I'll take pix of the replacement head this weekend when I get a chance and post them here.