Best Answer

Chances are you are using engine oil with a high vapor rate. The vapor, by way of the PCV valve, is being returned to the intake causing the oil on the filter. Change your filter more often or change the brand and/or grade of the oil.

Let me guess? Its a 2.5 , Rings are worn creating excessive blow by in crank case.

User Avatar

Wiki User

โˆ™ 2015-07-17 17:55:15
This answer is:
User Avatar

Add your answer:

Earn +5 pts
Q: Why would oil blow into the air filter on a 1989 Buick Century?
Write your answer...

Related Questions

Where is the fuel filter located and how do you replace it on a 1989 Buick Century?

where is the fuel fiter located on a 1989 buick century wagon 2.5l 4cyl, and how do i go about replacing it.

Where is the Location of fuel filter on a 1989 Buick Century?

It is located on the frame on the driver's side just forward of the gas tank.

Instructions for replacing air filter on 1989 4 cylinder Buick Skylark?

instructions for replacing air filter on 1989 Buick Skylark 4 cylinder

What happens when a 89 Buick reatta fuel filter goes bad?

What happens when a 1989 buick reatta fuel filter goes bad?

How do you replace the heater core on a 1989 buick century?

Do you have a picture on how to change the hearter core for this car?? If so would you send it to me.

How many gallons can a 1989 Buick Century hold?

It holds 16 gallons.

Where do you find the electric fuel pump on a 1989 Buick Century?

In the fuel tank

Why does the antifreeze not circulate in 1989 Buick century?


Where can you find the oil sender on a 1989 Buick Century 4 cylinder?

The 1989 Buick Century oil sender is located inside of the oil pan. You will need to remove the oil pan in order to view the oil sender.

What is the firing order diagram of a 1989 Buick Century 3.3 liter engine?


Where is the fusebox on a 1989 Buick Century?

Behind right hand Side Of Instrament panel

What is the crankshaft position sensor air gap on 1989 3.3 buick century?

That would be around three feet and five inches, give or take.

What is wrong when the engine of a 1989 buick century 3.3 liter cranks but get no fire?

crank sencer

1989 Buick century stock radio does not work but the clock works what can be the problem?

Check for a blown fuse.

What is the spark plug gap for a 1989 Buick Century with a 3.3 liter 6 cylinder engine?

0.060 inches

Where is the oil filter located in a 4-cylinderinder 1989 Buick century I have been under the hood several times and cannot locate where it is?

Look under the engine, in the center of the oil pan. Many GM Tec-4's had the filter located there. Be sure to use jack stands for safety.

Where is the fuel filter located on a 1989 Buick LeSabre?

look up towards the gas tank and look for the fuel line and u will see the filter look up toward the gas tank for the fuel line..the filter will be there

Does 1991 Buick 3.8 engine fit in 1989 Buick?

Depends on what model Buick...

Where is the starter on a 1989 Buick Century Limited and how do you change it?

The starter for the 89 buick is located in the front of the engine under the exuast manifold... Can be accessed from underneath the car.. will need to jack the car up somewhat to get to it.

Where is the oil filter located on a 1989 Buick Century?

It's a 4 cylinder and we have looked quite hard but just cannot seem to find where it is located. Yes, we feel foolish. Any more help will be much appreciated. You failed to list which engine. There is a 4 cylinder and a V6. But no matter, I can assure you both engines have an oil filter. If you will crawl under the car and look hard, you will find the filter.

Where is the radiator drain plug on a Buick century?

I cannot speak for all models, but my 1989 Buick Century has a drainage valve located near the bottom of the radiator on the driver side of the car, and can sometimes require pliers to open. It's usually easiest to look for it from under the car...

How do you turn securty light off on 1989 Buick Rhetta?

how do you turn off security light on 1989 Buick Rhetta

What century was 1989 in?

1989 was the 20th century (1900-1999).

How do you change the tail light on a 1989 Buick Century?

Remove the eighty thousand nuts that retain it, remove the sockets, slide it out and reverse procedure to install.

How do you replace the ignition switch on a 1988 Buick Century?

I have the same problem with my 1989.The best I have found so far is this:How_do_you_change_an_ignition_Switch_on_a_90_Buick_Century