Diagnose my smoking problem

[lost in espace]

My turbo blew up, snapped the shaft, seals went awol and I ended up with most of the oil in the intercooler and only a litre in the engine. The car was run for a very short time in order to get of a dark and wet motorway. Its an old school VW with a 1.9 TDi AFN engine code.

I have replaced the turbo but the car now had developed a smoking habit. If I pootle fine, no smoke. Floor it for 30 seconds and lots of blue smoke that continues for about a minute after you are pootling again.

I am thinking its the valve stem seals, would this sound correct. The smoke is blue!

[Johnboy Mac]

Clean out all the induction pipe work & intercooler for a start.

[Matt_N]

Worn valve stems normally manifest themselves at first start up when the car has been sat, oil leaks past them when the car is stood and is then burnt off when you start it up again.

They could be the cause but not likely.

As someone else has said, clean out the intercooler and pipework if you haven't done so.

Could be worth getting the compression checked for ring damage too.

Was the turbo new, re-con or 2nd hand? Turbo seals could be shot if the latter.

[thinfourth2]

Of course you have taken the intercooler out and washed it out with paraffin/heating oil/petrol after the turbo failed.

So seeing that you have done that then i would be tempted to say either the seals in the turbo or valve stem seals

[lost in espace]

thinfourth2 said:

Of course you have taken the intercooler out and washed it out with paraffin/heating oil/petrol after the turbo failed.

So seeing that you have done that then i would be tempted to say either the seals in the turbo or valve stem seals

Yes all cleaned, the turbo is second hand but a good one. Thanks for all your help, I will tax it and see if it gets better with use if I keep the revs to normal diesel driving its ok and should be OK until the mot.

[jjones]

disconnect the air feed near the inlet manifold and try revving it. if it still smokes this rules out oil/crap in the induction system and also the cold side of the turbo oil leak.

last time i had a problem like this turned out the oil scraper rings were not working correctly (stuck)

is it using any oil? i.e. the smoke could be diesel if it isn't using oil

[thepaintist]

Sounds like you might have oil still in the exhaust. Does it start to smoke after the engine warms up or is it immediate on start up. If it is the former try draining the exhaust. Worth a shot before you start looking at the engine.

[Oilchange]

i've had similar problems with my Esprit, oil gets everywhere and takes a while to dry out. In the meantime you will get a bit of smoke

[AF1]

I'd be looking at oil in the exhaust too it can take a while to burn off. We normally get the nightshift to take them out while the roads are quiet! Is it using any oil?

[lost in espace]

Oil and water levels seem stable. Over 3500 revs smokes hard for a while, no smoke on starting at all. Could well be that the exhaust still has oil. I am going to run it for a month now I have it working again and report back!