Crankcases and PCV Valves

A PCV valve is a valve (or fixed orifice metering device) which adjusts airflow through the PCV system to allow PCV operation without adversely affection fuel metering. The PCV system moves air from the air cleaner through the crankcase, then into the engine intake. The function of the PCV system is to mix fresh air with contaminated air in the crankcase (contaminated by blowby gasses as partially burned exhaust slips past the piston rings) to then burn off the contaminants during normal combustion inside the engine. The purpose of the PCV system is to protect the oil from degradation, sludging, and acidity caused by exposure to blowby gases without venting it to the atmosphere (polluting.)

Such damage to the engine oil would tend to shorten engine life.

The intake manifold.

First, locate the pcv valve. It is on the top of the valve cover in the center of it and has a small hose(about 4" long) going into the intake manifold. Now you will need needle nose pliers to remove the clamp from the pcv valve. Take your pliers and grab the round clamp at the two ends facing up and squeeze until the clamp opens. While holding the clamp open, gently move the pliers left and right while pushing towards the intake manifold. Once the clamp has moved off the valve, release the pliers. You should now be able to remove the rubber hose from the valve. Pull the hose off the valve. Now that the hose is removed, you should see the plastic end of the valve(right angle shape) Next, hold the valve at the base of the grommet(this is on the valve cover) pull up on it while twisting it back an forth. This part may be a little hard as some pcv grommets are tighter than others. Removed it little by little. Don't try to pull it out all in one shot or it might snap apart. I'd recommend getting your replacement pcv valve from the dealer. I've seen some aftermarket valves not work properly. Now the reinstall. Take your replacement and put a small amount of oil(very little) on the valve where it inserts into the valve cover. push straight down on the top of the valve until it is fully seated. When the valve is fully seated, you should be able to turn the top of the valve into position facing the intake manifold. Now, attach the hose to the new pcv valve and use pliers to move the clamp back into place on the hose. You will notice a ring shaped imprint in the hose where the clamp should be seated. Good Luck!!!

edit: I advise also replacing the grommet since it will eventually get so hard and brittle that when you do have to replace it it will break up and pieces will fall into the engine.

No, the pcv valve is not even close to the transmission.

behind the alternator, under the intake. to the right of the oil filter. pain in the rear to change. trust me, i used to be a tech at a Nissan dealer

In the I-type cylinder head, the intake and exhaust valves are positionedvertically at the top of the cylinder head. Both valves move down into thecombustion chamber to open. This type of cylinder head is used in overheadvalve (OHV) engines, which are found most often in automobiles.ANSWERS: I-type

The PCV vale is located on the extreme left side of the intake plenum when standing in front of car. remove plastic engine cover ( unscrew oil fill tube). the sensor is under the black plastic part with a small wiring harness on top of it. push down and turn counter clockwise and lift off it is spring loaded slightly. you will now see the top of pcv use needle nos to pull out sensor ...that's the PCV valve, just pull on the shinny little tube and it will came out , save the gasket (O ring) look under cover you will see slots where tabs insert line them up push down and turn clockwise.

tip remove wiring harness for a little easyer job but not needed

A crank case heater is designed to keep the engine warm enough to prevent the oil from becoming so thick over a cold winter's night to prevent the engine from starting.

No, it wouldn't. Is it standard or automatic? If it's standard and shifts hard, check the clutch and clutch barring. If it's auto, check the tranny fluid level ... not much else you can do with an auto.

On the top of the head/heads. The valve covers, cover the valve train.

front side of plastic intake manifold

This is for a 2002 model, but it may be the same as a 2004. http://autorepair.about.com/library/pictures/illustrations/bl525a-lib.htm On the passenger side valve cover, is installed to a rubber grommet on the cover and conected to the lower lpenum by a hose.

To replace the PVC valve on a 3 litre v 6 Lincoln . ls You need to remove the intake manifold ( throttle body included ) then remove the BLACK (intake port) structure which also contains the fuel injectors and fuel delivery tube ( F.Y.I this is all one unit) then you will see a small square box (about two inches square ) that contains the PVC valve and a rubber elbow ( about 135 degree bend ) joining the PVC valve to a tube.

Now THIS IS THE TRICKY PART take a screwdriver (that is not so sharp) Push the elbow off the PVC valve and when that end is free remove the other end of the elbow from the tube. With the elbow OFF. take a LARGE needle nose pliers and turn the the PVC valve HALF TURN to disconnect. CAUTION. there is enough room in the 'VALLEY' to accomplish this. Its not easy but quite possible If You cant disconnect the elbow this way you need to remove a ( 8 mm ) nut at the back of the engine block ( between the block and the firewall ) which secures the tube that the elbow is connected to.

This engine is somewhat unique Please CHANGE THE PLUGS and do a ohms meter check of the coil on plug units that are under the manifold. use GOOD SPARK PLUGS because you will not be doing this too often

The PVC valve will be located in one of the valve covers. The valve covers are on top of the engine on either side. And it will have a hose attached to it which will lead over to the air intake system.

Its at the end of the LHS engine cover. You normally cannot see it in front of the engine. To access it, you need to identify the hose and then follow the hose by hand. Your hand should feel a hose clip which is connected to the PCV which in turn monted directly on the engine cover.

The 1997 Mercury PCV valve is located on the outside of the air cleaner housing. The PCV valve can be found on the back of the housing.

The PVC valve for a 2005 beetle is in a tee hose. The hose is on the front right under the intake manifold.

http://wiki.answers.com/Q/How_do_you_know_if_your_PCV_valve_is_not_working"

To answer this, first i need to know what size engine you have. Is it a 2.3L 4 cyl or a 3.3L 6 cyl.

on an SOCH 4cyl its mounted in the oil separator on the left side of the engine on DOHC 4 cyl you have to remove the drivers side inner fender well to get to it

Isuzu pcv number 8-97289-271-0(MSRP $15.95) is located on the left (driver) vavle cover. On the left VC cover it is closest to the rear of the cover towards the firewall. It will have a hose connection on it leading to the throttle body.

It took me a while to find mine. It's been a while since I changed mine, and I tried to find the exact location again, but I could not see it. It is on the passenger side of the motor, close to where the water line to the heater comes off by the thermostat, and if I rememeber correctly, it's under the intake manifold. If I remember correctly, it's not directly on the motor, but off of a pipe, but I'm not sure. Sorry I couldn't help you more.

When facing the engine, you'll notice two small fittings on either end of the valve cover. The PCV valve is the one on your left. Unscrew the plasic cap and replace the valve.

yes theres actually two different kinds to my knowledge. its really easy to see. its just straight, no elbow like most. the front valve cover should have a hose comin out of it. follow the hose a short way up. the other end LOOks to be just a fitting but its not. that's the pcv valve. it should either slip in or screw out. that's the difference between the two. one slips in. one screws in.

WE need to knw which engine you have: 2.0 Zetec, 2.0 SPI, 2.0 Zetec VCT?