Blue smoke out of exhaust

it could have engine dammage or just that the exhaust is full of engine oil from old turbo blowing up and its burning off
is the engine oil going down? if so motor damage

audi oil leaks are usually valve cover gaskets. oil run off causes smoke on exhaust downpipes.while vacuum hoses do tend to dry rot with time it may also be the secondary air injection pump (if cold ) or waste gate for turbo.try to use a long hose,put one end on your ear use the other to locate sound. extending mirror and light may help too. missing at idle could mean time for tune up or coil pack failing. good luck

Engine also smokes when car driving if turbocharger still faulty. Did you change the engine timing belt (the timing belt kit) meantime? What about engine oil consumption? When engine glow plugs (one or more) burnt then engine exhausts white smoke at idling. Also white smoke at engine idling when water is still present in diesel fuel.

Hi , if you have had a turbo failure on this vehicle , just replacing the turbo will not cure the cause of blue smoke . depending how bad the seals had gone in the turbo you would need to replace , the complete exhaust system , the crankcase breater , air intake manifold , air charger but only if these items have been contaminated with oil , they would not be able to be cleaned out , hope this helps , regards mark

It's time for a Italian tune up!

The blue smoke can be one of two thing.

oil drop from the valve stem (from engine head to cyclinders)
or
diesel soot collect inside the exhaust system.

===
I will take a 5-10 minutes high rpm (not redline) ran on the highway.
Pay close attention to the rear view mirror and look for black diesel soot.
=== I will use Diesel Cleen or similar product to condition the fuel. (keep moisture down)
Use the recommended amount of SEAFOAM oil additive to condition the valve stem seal/rubber parts.

I can not rule out excessive blown by.
Can you get a diesel compression tester?
When was the last valve adjustment?

Please post the actual odometer on the engine and I will follow up on it.

normally blue smoke is burning oil and if this is the case you may have a valve stem oil seal which is leaking these prevent oil getting into the top of the bore via the valves. if it does you grt the oil burning on start up givivg blue smoke and to fix these you may have to remove the cylinder hesd i work on lorries and classic cars and some you can get away with leaving the head on but have never worked on a bmw

Hi , I`m not sure about the 01 model but the 98 model got this roker cover gasket problem because it`s too close to the exhaust and with time can`t handle the heat.So when you rev the car , dropping oil on to the exhaust and one little drop of oil can make big smoke which coming up around the turbo. Hope this helps .

One way to check for a blown head gasket, is to simply smell the coolant reservoir. Pop the cap, and see if it smells like raw gas. Every headgasket, I've diagnosed has had this smell, even if the oil is not contaminated. Another way is to hook up a coolant pressure tester, and run the vehicle for 15-20 mins or so. If the head gasket is blown, the pressure will exceed 15 psi. sometimes as high as 25 psi. If there is oil in the coolant overflow tank, the head is cracked, about 90% of the time.
I'm working on a 03 Saab 95 2.3l t. This vehicle smokes on initial start up, then the smoke disapates, and the vehicle is fine. Another mechanic diagnosed it as bad valve seals. I disconnected the pcv system, and the vehicle no longer smokes. If the valve seals have gone bad, the vehicle will smoke on acceleration. Also if the turbo seals are leaking it will smoke more heavily on acceleration.

blue smoke out of 1.8 turbo its allways bad oil seal inside turbo.need new turbo or rebuild OEM. with 24 years experience working with vw never seen single headhasket go bad on 1.8 turbo engines.blue smoke its 100% turbo every time

gday im a mechanic i have owned two of these in a lite ace and a tarago there are three possitions that the cam shaft can be aligned and not have valve piston contact the middle one is the right one the two ither side of the correct one cant breath properly smokes badly ,idels rough and extreem lack of power and excessive noise (cam belt one tooth out ) same if injector pump is a tooth out but noisier. you need to remove the fan hub bracket to see the timing mark for the IP drive pully also the injector pump internals can be assembled 180 degrees out resulting in injection at bottom dead centre , extreem noise ,heaps of smoke and will barely move the car in first gear also the crank timing mark is only visible with the front harmonic balance flywheel and timing belt cover removed . answer to the other question why not a rover diesel . the 2ct ues heaps less fuel revvs heaps harder comes factory balanced is heaps quieter and lasts heaps longer there is no contest with the rover diesel the 2ct weighs less to the down side is that the turbo usualy fitted on the 2ct is under sized and very short lived. boosts early for low down torq but is unable to breath at the high revvs that this engine loves. turbo getts too hot at highway speeds and melts bearings if not warmed down . mine has a water cooled turbo of a 2.8 izuzu motor from a trooper/jackeroo im soon fitting this engine and turbo into 79 chrysler scorpion. this engine when decompressed to 17 to one with hot glow plugs handles 30 psi boost, you can get three different thickness head shims for this motor to decompress , ignore petro company propaganda ive done 300,000+ kms burning everything from lard mixed with alchohol to canola and sunflower blended with jet fuel ,petrol, sump waste oil a good injecor pump will feed an engine anything thicker than kerosine so long as its hot(80 to 100degrees c) even lard and sumpoil the thicker the oil the more lubricating and the longer the pump and injectors last so long as the oil is well filtered and free of water

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