200tdi - blown motor? Your diagnosis please oily types!

[Hobbes]

It's a 200tdi Def110 (owned by the bar manager at our Balmain local so it's important for all bar room experts like me to get this right!)

There's oil ****ing out of the air filter drain, massive amounts of blow by smoke coming out of the oil filler on the 'rocker' cover, and plenty of smoke out of the exhaust - needless to say running rough to boot.
My first thought was a blown turbo oil seal, but the blow by oil seems to indicate a blown piston?? - it's done 150kays no known history of overheating- doesn't seem to be a history of that problem recorded in previous threads...

What's the diagnosis? Is our law student & broke bar manager up for a 6K bill or is it something really, hopefully simple....

ta
Hobbes (usually just V8's)

[slug_burner]

sounds like a couple of $k repair bill.

[isuzurover]

Hmm - multiple symptoms.

If it was just the blowby I would say cracked rings (common with earlier 2.X LR engines).

However the other symptoms say turbo. Excess crankcase pressure could (possibly?) be stopping the turbo from draining oil though....

Do a compression test and go from there.

Either way - $$$

[abaddonxi]

Blocked oil breather?

[Don 130]

my 300tdi did similar things when it blew the head gasket.
Don.

[Dougal]

Like Ben said, compression test and go from there.

[Jock The Rock]

I remember longstroke had a similar problem with his 200. JC diagnosed it as a blown head gasket which pressurises the crankcase excessively causing massive amounts of oil smoke out the filler cap

As the others have said, compression test

[Blknight.aus]

skip the compression test, go straight to the leakdown test.

but a quicker method of identifing the problem is to check the oil and the water, then start it and crack open the injector unions one at a time (PPE please) if opening one union stops the blowby and makes little difference to the running of the engine then you have the culprit pot.

assuming that gives you a workable symptom set (IE it does stop the blow by and the engine continues to run with little change) pull that injector and glow plug, inspect the piston through the holes left with an endo scope. if the pistons holed and you dont want to spend a fortune just pull the head drop the sump and replace that piston.

you might also get really really lucky and its a case of blocked returns from the head to the sump so the oil is pooling in the rocker area.. but thats very unlikely with a pushrod engine.

[Hobbes]

Thanks everyone.
We had to trailer the Def to the diesel doc (naturally it expired in a two hour parking zone so kerbside fix a bit of an issue) So it's gone off with the instruction to do as blknight suggests first - our friendly neighbourhood Volvo Penta specialist was in the pub and suggested same.

Will report back!

[justinc]

Head gasket blown into the pushrod tube/s at number 3 and 4 cylinder is my guess.

JC