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doctorbig

New Member

• Dec 28, 2010

• #1

Hi all

Yesterday my 02 TD4 Freelander lost power then started to rev flat out, turning the key off did not stop the engine, there was a lot of smoke and after a short while the engine stopped, had a look today and the inter cooler and pipes have an oil and diesel fuel mix in them, the crankcase breather valve looks clogged. The engine is full of oil mixed with diesel some how a quarter of a tank of diesel has ended up in with the engine oil, does anyone have any idears.

Dave.

 

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Mark2

Active Member

• Dec 28, 2010

• #2

Yep - runaway engine following Turbo seal failure

It's done for.

Likely originating from a clogged crank breather filter in the first place

 

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doctorbig

New Member

• Dec 28, 2010

• #3

Yes run away engine, but how does that account for the engine sump / block being full of diesel,

Dave

 

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mickymck

New Member

• Dec 28, 2010

• #4

had this before on a , dare i say it [ford] engine.turned out to be seal on end of fuel pump leaking into crankcase.dont no if td4 pump is same.

 

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Mark2

Active Member

• Dec 28, 2010

• #5

Fuel pumps are seperate on TD4, not attached directly to engine and electrically driven.

It's a high pressure common rail diesel
so,
if one or more injectors stuck open during the meltdown, the pumps will keep pouring diesel in all the time the ignition switch is on

 

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mickymck

New Member

• Dec 28, 2010

• #6

the td4 has 2 pumps,one lp pump electric,and a hp pump driven by the timing chain it is the hp pump i was thinking of as on the [ford] still could be same problem?

 

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Mark2

Active Member

• Dec 28, 2010

• #7

Not quite,

The early TD4 has a pump in the tank, then a lift pump in the engine bay and then the high pressure injection pump which is chain driven but has no other direct connection with the engine requiring a seal.

Later TD4 have a pump in the rear wheel arch

either way, only way for diesel into engine is through injectors

 

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doctorbig

New Member

• Dec 29, 2010

• #8

I dont think so but is there anyway an injector can be filling the sump with diesel under normal running.

Dave

 

M

Mark2

Active Member

• Dec 29, 2010

• #9

You can have leaking injectors, but it would run bad with that

I think that what you have is a consequential effect rather than the cause.

Either way, it's fooked.

A blocked crankcase filter causes crankcase pressure to build up - usually seen by oil coming up the dipstick tube.
This pressure then blows the turbo seals - sudden drop in power
followed by oil under pressure and a pressurised crankcase
... recipe for a runaway diesel engine
blown rings or a hole in a piston will allow the 2 liquids to meet

 

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doctorbig

New Member

• Dec 29, 2010

• #10

Thanks for the replys, just one last thing is the Rover 75 TD4 the same engine and Turbo as a Freelander.

Dave