001 audi a4 1.8T quattro has had an itermittent oil burning smell (cabin and external) and as of recently I have noticed an occasional antifreeze odor as well. There is 77k on the car. The valve cover had a very slight leak and was tightened down with no signs of further leakage. The oil and coolant levels seem to be fine. Oh - and I have noticed on 2 separate occasions within the last 2 months while stopped at a light, that the exhaust appears to be heavier than usual. The later occurence was simulataneous with the smell of burning oil. Since temps are frigid here (upstate NY) i wrote off the exhaust cloud to cold weather...however, I am concerned that may not be the case. Any ideas??

Check for a leaking valve cover gasket/s .

this could just be oil leaking out off value cover and burning off exhaust can u smell the smoke? does it smell like antifreeze ?? if smells like antifreeze more than likely have a coolant leak if has little smell or burning oil smell probably an oil leak

These cars leak! Regular services can usually find and fix these leaks as they happen. Valve cover gaskets and cam Phasers are one big one that drips on the exhaust manifld and stinks up your car. Oil sending units and oil coolers are big on these cars also.Good Luck.

HAVE YOU NOTICED COOLANT LOSS,RECENTLY?KEEP THE COOLANT LEVELS FULL,CHECK TO SEE FOR ANY LOSS AT ALL! OIL SMOKE IS MORE BLUE THAN WHITE,BUT FUEL CAN HAVE A LIGHT BLUE SMOKE.Antifreez more whitesh with a similar smell of antifreeze.

hi did you get a solution for this? the same thing happened to me too.I had my oil change yesterday and today I saw the engine oil pressure lights come off and the oil started leaking very bad and the mechanic told me that the oil filter housing cracked.

Have you looked at the exhaust pipes for oil dripping and burning off??

Well one you cant "patch" a radiator hose, especially one under high pressure with quite a few bends on the V8 Q's. (I assume you are referring to the upper hose). First replace the hose, which will be more expensive than a Granada's :). Then I, Not saying you should do this, but again I would experiment with water instead of expensive antifreeze, at least checking for leaks. You probably don't want to bring it to 100% operating temp however as water has a lower boiling point than antifreeze. Ok let me just ******* and move on.
YOU fill with at least 50% antifreeze when car is cold (more if the outside ambient temperature says you should). Start your Audi with the fresh fluid. Let her run for a while why you watch the temp. gauge on the left. Should stay right below 100 (center marker), possibly a tad over. Do not let it overheat. (this is assuming your gauge is working, and your temp sending units (3) and auxiliary fan are functioning. Look for leaks. Step behind the car and get your nose close to the exhaust. Does it smell like sweet antifreeze? Do you see white smoke? If neither head gasket is probably good although leak could be finding another outlet. Usually not with the v8Q's. Is your thermostat opening? Check and see if you have heat? if no heat then your coolant isn't circulating properly = bad thermostat, filthy radiator and coolant system needs major flushing or possibly worse your heater core is gone, which would indicate constant fogging on the inside of windshield noticeable when the defrost is put on and smell of antifreeze in the cabin. This would also explain a not so obvious loss of antifreeze. If indeed your heater core...sorry ...not fun on this car. Not fun at all. Good luck.

If its blue smoke then your valve stem seals are worn and that is allowing oil to enter the cylinders and burning with the gas.

hiya,i dnt know about the shuddering/turbulance,but a can of Aircon Cleaner and Purifier will definately helps the aircon system and the mouldy residue. Hope it solves part of your problem.

have the oil pressure checked as soon as you can... also have them check the wiring for the oil sending unit

Robert

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