Back to all

Ingalls Park Drivers: Is It Time To Replace Your PCV Valve?

April 24, 2015

Improved fuel economy has two benefits for Joliet car owners: less fuel is necessary and fewer emissions are released. Ingalls Park cars and trucks run cleaner than ever. Joliet drivers may not realize that the first federally mandated pollution control device came out almost fifty years ago.


Illinois motorists that were around in the early 60's may remember that the PCV Valve came out on 1964 model cars. PCV stand for Positive Crankcase Ventilation. Ingalls Park Drivers: Is It Time To Replace Your PCV Valve?The crankcase is the lower part of the engine where the crankshaft is housed and where the engine oil lives. The crankshaft is connected to the pistons that power the engine.

When fuel is burned in the SUV engine, it pushes the pistons down and the crankshaft rotates and sends power to the transmission. Some of the explosive gases from combustion squeeze past the pistons and down into the crankcase.

Now this gas is about 70% unburned fuel. If it were allowed to remain in the crankcase, it would contaminate the oil and quickly turn it to dangerous sludge. Sludge is like Vaseline and clogs passages in the engine leading to damage.

Also, the pressure build up would blow out seals and gaskets. So in the old days, there was just a hose that vented the crankcase out into the air. Obviously, not good for our air quality in Joliet.

Enter the PCV valve. It’s a small, one-way valve that lets out the 
detrimental gases from the crankcase, and routes them back into the air intake system where they are re-burned in the engine. Fresh air comes into the crankcase through a breather tube. This makes for good circulation in the crankcase. And that gets the harmful air out. As you can imagine, however, the valve gets gummed up over time.

Ingalls Park drivers that skip oil changes now and then will notice that the PCV valve gets gummed up even faster. If the PCV valve is sticking in your SUV, the gases won’t circulate as well, leading to increased pressure in the crankcase. That, in turn, can lead to oil leaks. Fortunately, the PCV valve is very inexpensive to replace at Tuffy Joliet in Joliet. Some can even be checked by your friendly Tuffy Joliet advisor.

Your SUV vehicle manufacturers usually recommend they be changed somewhere between twenty and fifty thousand miles. Unfortunately, PCV valve replacement is left out of some SUV owner’s manuals, but at Tuffy Joliet, we will make sure your PVC is replaced if needed.

All of us Ingalls Park car owners can do our part for the environment. Watch that lead foot, stay on top of our vital automotive maintenance and don’t forget to replace our PCV valve.

More articles from Tuffy Joliet

Tuffy Joliet (South Plainfield) Guide to Using the Correct Fluids in Your Vehicle

April 14, 2024

Today's Tuffy Joliet (South Plainfield) post focuses on using coolant. If you pour in the wrong kind, it won't protect the cooling system and may even void the warranty. Check your vehicle owner's manual. Of course, your Tuffy Joliet (South Plainfield) service advisor will know the proper coola... More

Poor Reflections (Door Mirror Problems)

April 7, 2024

Mirror, mirror on the door, why is my vision there so poor? Well, you could have a broken outside rearview mirror that's disabled your blind spot vision there and endangering your ability to see some of the traffic around you. Outside rearview (or door) mirrors are important safety devices that ... More

Don't Start with That (Bad Starter Motor)

March 31, 2024

We've all heard that expression, "That's a non starter." When it comes to your vehicle, that's not music to a driver's ears. That sickening sound when you start the ignition and instead of hearing the engine crank, you hear it slowly turn over and your dash lights go dim. There can be many reaso... More