Question about 2001 Mercury Sable

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There is oil dripping from the air filter intake box ,do I have a bad PCV valve ? Or what? Help! I can see oil laying inside the intake and it has run down into where the filter sits.2001 3.0L V6 OHC Merc. Sable     Thanks Jeff

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Change the pcv valve it will probably help.

Posted on Oct 07, 2009

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1 Answer

Why would my 1994 jeep wrangler have oil in my air filter and in the air filter box


pcv not working.check see if pcv valve getting vacuum at the intake if not look for broke or disconnected vacuum hose to pcv.if pcv valve working with engine running should feel vacuum suction at pcv if not pcv faulty.if pcv okay other possible causes for oil in the air filter.worn oil rings or too much oil in crankcase.

Dec 13, 2012 | 1994 Jeep Wrangler

1 Answer

I have 1994 wrangler I am getting alot of oil in the air filter. Is it a bad pcv valve?


You may be right about a bad pcv valve i would start by replacing that, also theres been problems with the tubing for the pcv system, this contains a bunch of tubes a (plastic) that connect to the valve cover and air box and the intake this system gets blocked or restricted, and sometimes the hoses break so make sure its not broken or plugged,start with these tips, hope this helps.

Oct 24, 2010 | 1994 Jeep Wrangler

1 Answer

Oil in air filter wot causes this car in qustion is a jag xj8


This issue is caused by crankcase pressure issue.
Normally filtered air enters the engine, runs through the crank case and then is pulled into the intake through the PCV valve. Durning hard acceleration, the PCV valve closes (to prevent explosion of fumes in crank case and blowing valve covers and pan off) and the PCV system reverses, with fumes coming back through the filtered intake.

Usually there is minimal oil that gets back into the air cleaner.

So, when somthing goes wrong, like excessive blow by, for example, the crankcase pressure overcomes the PCV valve and intake of fumes capability, and oily starts showing up in the air filter.

Investigate the crankcase pressure and PCV system.

Oct 14, 2010 | 1998 Jaguar XJ8L

2 Answers

Driving down the road at 55 and the car lets out a bunch of white smoke for about 5 seconds then goes away the when i stoped and looking in the air filter base it is full of oil. How can i fix it


you might get lucky with a new PCV valve. But it sounds like you have a small leak in either the intake manifold or a head gasket. if so it will get worse soon. white smoke is water. blue is oil. black is gas. place a white rag or paper towel at the tailpipe to get the true color of the smoke

Sep 03, 2010 | 1991 Geo Metro

2 Answers

I have a an oil fouled plug at cylinder 7 just below the PCV valve....could a bad PCV be causing this problem?


Yes, it very well could be a faulty PCV, and it might also be a leaking intake manifold gasket allowing oil to enter the intake through the lifter valley area inside of the engine.

Jun 07, 2010 | 2003 Dodge Durango

2 Answers

My car will stall when stopping. I have found oil in the air filter compartment, and the car runs well otherwise. In other cars I have owned this was fixed by replacing the PCV valve, yet I was unable to...


Yes, this vehicle is equipped with a PCV valve!

It is located underneath the intake manifold, slightly above the oil filter.

Although difficult to see, if you look from the driver's side through an opening under the intake manifold, you'll see a sensor. Look to the left of the sensor and slightly below for your PCV valve.

It is a little elbow with a clamp and may be covered in oil.

Your patience and dexterity will be tried, however you can replace it yourself.

Please let me know if I may assist further.



May 12, 2010 | 1996 Honda Civic

1 Answer

Getting oil into the filter in my focus 1.6tdci= 05


the PCV or positive crankcase ventilation valve is causing oil to get into your intake. the pcv valve lets pressure and fumes from inside your engine escape and it is routed to your air intake to be burned with the fuel. this is a necessary mechanism and function for your engine. if you try to bypass it, it will make your engine run badly, and will cause a failure come emissions testing time. it's normal.

Feb 16, 2010 | 2006 Ford Focus

1 Answer

Oil leaking into the air filter?


a bad pcv valve causes oil in the air filter housing the hose runs to the pcv valve

Apr 11, 2009 | 2000 Ford Windstar

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