Question about 2002 Audi A4

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My audi has a oil leak of some sort which is leaking into the air filter unit and has soaked my air filter, the oil leak is coming form aline that runs along the top and side if the air intake unit. why should I do to fix this problem?

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Follow the line backwards down to the block and clean the breather(if fitted) this is not an oil leak, the pipe is there to **** up the engine pressure when decelerating.........the air filter should be changed every 20 thousand miles/2 years.....

Posted on Sep 14, 2010

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Posted on Jan 02, 2017

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My 1996 audi A6 has an oil sending unit problem...can you tell me what that might take to fix and why would this show leaking oil? I thought this part was inside the oil pan?


The oil pressure sender unit is located on the oil filter housing.These do tend to leak at times. The warning light for this switch is a red oil can and a buzzer. Replace the switch. If warning light still comes on, have the oil pressure checked. The oil level sender warning light is an orange oil can with oil level under it. This sender is fitted on the bottom of the oil sump and can leak past the seal. If warning light comes on, check oil level. If ok, check for damage to wiring under vehicle. Senders do some times become faulty.

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Has a bad oil leak coming from under the car . The only time it leaks is when the car is running, was told that it could be the oil pan gasket or the oil sending unit, what I wanted to know is where the...


The oil pressure sending unit screws into the engine block so you will need to look between the oil pan and the head.I suggest that you try tightening your oil filter first.

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check to see if the oil sending unit isn't the cause,it mounted around filter are,they are just hard plastic and leak when car is running

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Where is it leaking oil ? If the oil is coming form the input sheft. The seal is bad. You need to rebuilb it or buy a new trubo.

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Oil leaking from some sort of plug above the oil filter


If the leak is coming directly from above the oil filter it is more than likely the oil pressure switch is leaking. The seal around the Oil pressure switch could have gone bad and now it is leaking.

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