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Crankcases and PCV Valves

Basically, a crankcase is the casing for the crankshaft of an internal combustion engine. Combustion produces pressure within the crankcase. Positive crankcase ventilation (PCV) valves regulate the vapor pressure within the engine and recycle it back into the engine.

1,344 Questions

Where is the PCV valve on a 2004 Cadillac DeVille?

I have a 2001 Deville. The PCV Value is under the cover ( this is the one with the cadillac emblem on it ) that is across the top of the engine. It is located at the back left of the engine. You must remove the two plastic nuts that are at the front of the panel...left and right center front. Then up and forward. There is a small black metal piece at the center back of the silver panel top ( this is the one with the cadillac emblem on it ) that hold it at the back center. Hope this is helpful. I have a 2001 Deville. The PCV Value is under the cover ( this is the one with the cadillac emblem on it ) that is across the top of the engine. It is located at the back left of the engine. You must remove the two plastic nuts that are at the front of the panel...left and right center front. Then up and forward. There is a small black metal piece at the center back of the silver panel top ( this is the one with the cadillac emblem on it ) that hold it at the back center. Hope this is helpful.

Where is the crank case in a 2009 kenworth T 800 And what is it?

You know that shaft that the pistons are connected to in the engine? Yeah, that's a crankcase.

PCV valve location on 2.4L Nissan truck engine?

According to a Nissan forum , it is located behind the alternator, above the oil filter.

It's also important to check the PCV filter, which is a rectangular piece of mesh located inside the air filter housing. I can get plugged, reducing the airflow to the PCV valve, or (easily) go missing when changing the air filter.

When should a PCV valve be replaced on a 2005 Chevy Impala LS?

it shoulb be replaced about every 35,000 miles but some might be rivited into the value cover

What causes a car back wheel to lean in?

Bent wheel, possible loose wheel bearings, camber could be seriously off, sub-frame cracked, or something else like a traction arm is broken. Take it to an alignment shop and have it thoroughly inspected. This could be very dangerous.

Where is the PVC located on 03 duramax?

The PCV valve is mounted beside of the alternator on an 03 Duramax. The valve has two hoses, one for each valve cover.

Where is the PCV Valve on a 1995 Buick LeSabre 3.8L engine?

Buick Lesabre 1995 PCV valve location: Face the engine. Lift straight up - to remove the fancy plastic clip-on dust cover for the top of the engine. It has 4 plastic (2 on front and 2 on the back) C snaps that attach by pressing down from the top. As you remove this dust cover you will notice a flattened tab on the left side of the cover between the power steering and altenator. Keep your eye on this tab as you move the dust cover to the left and lift it off. The tab is part of the cover for the PCV valve. The tab does not move. The pcv valve cover has a spring inside so you will need to push down on the center of the cap while you turn the cap counter clock-wise. The PCV cap appears to have fan-style vents in the center of it and two extentions that look similar to small wings. Hold onto the wings as you push down and turn counter-clockwise. The cap will spring up as you release your pressure and the PCV may be attached to the spring. If it is attached, remove the PCV and the O Ring from the PCV. If it does not come out with the spring get out a pair of needle nose and remove it and the O Ring. Place the O Ring onto the new PCV and put the head of the PCV into the spring. Put the assembly back into the PCV holder. put the CAP back on and place the wings closer to the top and bottom of the tabs that are used to hold the cap in place. Push down and turn clock-wise. replace the plastic clip-on dust cover in reverse order.

Where is the PCV valve on a 1990 cutlass supreme 3 1 engine?

It's on the rear valve cover. The easiest way to change it is to pull off the alternator. It's also the easiest way to change the rear spark plugs and wires.

Where is the PCV valve located on a 1991 Chevy Caprice Classic?

pcv valve is located on right side rocker cover viewed from front of car hood open just behind alternator with pipe going to throttle body d.cop

Where is the PCV valve located on a 2005 dodge ram with a 5.7 hemi?

On the intake manifold, passengers side, by the throttle body. It screws in like a little oil cap. There is no hose attached.

Where is the pcv valve on 96 Camry?

It is on the engine cover next to the spark wires mount. It is near the distributor and has a short PCV hose connecting it. Also look at autozone.com for a picture of the valve and you will recognize it. It is a bit hard to pull it out. You might need a tool to help.

What are the functions of engine crankcase?

ØProtecting the crankshaft and connecting rods from foreign objects.

ØKeeping the motor oil contained, usually air- tight or nearly air- tight.

ØProviding the rigid structure with which to join the engine to the transmission.

ØIn some cases, constituting part of the frame of the vehicle.

Where is the pcv located on a 1995 ford f 150 5.8L engine?

Look On The Passenger Side Valve Cover. It Should Be Back Top Of Pan Near The Firewall. It Is A Little Hard To Get At, But You Can Do It. Just Take A Bit Of Time. Good Luck.

How much crankcase oil does a 1999 Honda cr125 take?

I don't know, but I have the exact same question!

I believe it should be 650 ml. If in doubt there should be a little screw in the side of the clutch side cover. It is about 1/3 of the way up towards the middle of the cover. Take screw out and fill oil until it starts to come out of hole.