The Little Valve that Could (PCV Valve Replacement)

It’s easy to get letters like PVC and PCV mixed up. PVC is a plastic that’s used in a lot of things, especially plumbing pipes. And PCV is a valve that helps your engine burn off excess fumes rather than having them pollute our atmosphere.

PCV stands for positive crankcase ventilation. When your engine ignites gasoline in the cylinders, some of the gases produced make their way into the crankcase, where oil is held to lubricate the engine. In earlier days, those gases would be vented out through a hose and go directly into the air. It was a waste of gasoline (since about three-fourths of the gases were unburned fuel) and a nasty source of pollution.

So engineers devised a one-way valve that directed those gases back into the engine’s air intake system to be burned again. After a while, the PCV valve can get clogged up with gummy oil. Not only does that reduce the recirculation of the gases, but it can also cause pressure in the crankcase to increase and possibly lead to an oil leak.

Signs your PCV valve has failed are oil leaks around the engine compartment or under your vehicle and poor engine performance. Your fuel economy will get worse. If you notice those signs, we can check your PCV valve.

At the same time a technician inspects the PCV valve, they’ll also check the vacuum hose that runs back to the air intake. Plus, they’ll make sure the vehicle doesn’t have any other engine problems that might be contributing to your issues.

Many technicians recommend replacing your PCV valve with each major tune-up, so you get ahead of any problems before they develop. Now that you’re an expert on PCV, it may be time to check out those PVC pipes in your bathroom!

Autotronics of St. Peter
111 Jefferson Avenue
St. Peter, MN 56082
507.934.9290
http://autotronicsstpeter.com

TCB your PCV (PCV Valve Replacement)

Your gasoline engine goes through some exhausting work. Yes, it’s truly exhausting, as in: it produces exhaust! And when your engine starts behaving like it’s exhausted, such as running poorly or getting lousy fuel economy, the trouble may be something called a PCV valve.

Did you know it’s a series of explosions that creates the power in your engine? The spark plugs ignite a mixture of gasoline and air and BANG! A whole bunch of those and you’re engine is humming away. Leftover vapors from those explosions go into your crankcase, which is also a place where engine oil goes. Those vapors still have a lot of unburned fuel in them, and if they had nowhere to go, they’d turn your oil into a thick mess called sludge, not good for a smooth running engine.

Engineers came up with an idea. Re-direct those gasses building up in the crankcase into the engine’s air intake and mix them with fresh air. That way the unburned fuel could go through the engine again and produce power. It also means the unburned fuel doesn’t pollute the air. The part that makes that happen is called the Positive Crankcase Ventilation (PCV) valve.

Besides reducing pollution and preventing the oil from turning to sludge, the PCV valve also relieves pressure in the crankcase, reducing the potential for oil to leak. One of the reasons you should get your oil changed as frequently as your vehicle’s manufacturer recommends is that it helps reduce chances for problems with the PCV valve.

After a while, the PCV valve can itself get gummed up and stick, and the driver may notice oil leaks, reduced power or engine hesitation. That’s why it’s important to make sure the PCV valve is operating like it should, and often it can be diagnosed during a visual inspection by our technicians. Replacing a PCV valve is usually quick and inexpensive. After it’s done, your vehicle will run with the performance and fuel economy you’re used to. Goodbye exhaustion!

Autotronics of St. Peter
111 Jefferson Avenue
St. Peter, MN 56082
507.934.9290
http://autotronicsstpeter.com

Not-So-Smooth Operator (Transmission Signs of Trouble)

You are heading down a flat, newly paved street when all of a sudden you feel it. Your vehicle jumps a little bit when you’re accelerating and changing gears. You know it’s not the surface of the road because it’s smooth as silk. So what did you just feel?

That kind of jumping—or grinding or slipping—during gear changes could be a sign of trouble in your automatic transmission. And it’s important to get it checked out fairly soon because some transmission problems that aren’t fixed early can lead to more involved and expensive repairs.

By far most vehicles on the road in North America have automatic transmissions, and they are workhorses. Unlike early cars with balky, hard-to-shift manual transmissions, the latest automatics allow you to drive without having to even think about gear changes. But you should know about a few signs of trouble to look for if they ever start showing up.

When you first get going and shift your vehicle from Park into Drive, do you feel a slight pause?
How about when you shift into Reverse? Is there a little lag?
Does your vehicle sometimes shake when you’re traveling down the road?
Do you smell something burning in your engine compartment?
Do you hear a clunk when your vehicle shifts?
Do you have spots of a reddish or brown, oily fluid in the driveway under your vehicle?

If you do, these are worth getting checked out at our service center. When automatic transmissions start to show signs of wear and age, it can be because of a number of reasons. They can be caused by your transmission fluid getting old and contaminated, or its level may be low. The gears can be worn. You may have a leak somewhere in your transmission. Or transmission problems might be caused by a computer problem.

Transmission issues aren’t always expensive to repair. Sometimes there may be a leak in a hose or gasket. Or a computer needs to be reset. Other issues may be much more involved. This is why it’s important to get your vehicle checked out when you do notice something doesn’t feel, look, shift or smell quite right. Everyone wants their automatic transmission to be a smooth operator.

Autotronics of St. Peter
111 Jefferson Avenue
St. Peter, MN 56082
507.934.9290
http://autotronicsstpeter.com