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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 does a black hose running from the front valve cover connect to?

The black hose hooks up to the air-intake box that is bolted to the radiator brace. It is part of the emissions stuff. I bet you have beacoup oil on engine from this hose, if its not attached. It will also affect the way the engine runs. AJ

What does the PVC valve do?

The PCV valve is a control device which sends partially burned gases that come from the engine's crankcase to the combustion chamber. The PCV is generally used to regulate the air flow.

Where is the pcv valve located on a Buick Century?

it shuold be on the valve cover Some do. It depends on which engine. One of the more inconspicuous is in the 3.3 litre V6, where it plugs into the intake manifold under the alternator. You pretty much have to remove the alternator to even see it clearly.

What is a crankshaft?

It is the cast iron shaft in an internal cumbustion engine which is driven by the pistons in a circular fashion. The shaft in turn transmits power to the transmission or gearbox. It also drives the pulleys which power your alternator, water pump, A/C, power steering & brakes or other accessories.
The cranksfat turns up and down movement into rotational movement.
crank shaft is nothing but the part of vehicle which is connected with piton with suitable rod to transfer power produced by engine to fly wheel.

Where is the pcv valve located on the 1999 Chevy Prizm lsi 1.8l l4?

It's on top of the valce train cover. You'll have to take off the black plastic shroud that covers the top of the engine. Its on the transmission side of the engine (driver's side of car) towards the firewall. It's just a little rubber hose that goes from the valve train cover to the intake almost directly below it.

Where is the PVC valve on a 95 Pontiac Bonneville SE located?

on a 3.8 remove the cover over the top of the engine and look on the very end of the intake closest to the altenator.there should be a connector with three wires. unhook the connector and twist the housing, remove the housing and there it is. keep in mind theses intakes are notorious for leaking coolant into the cylinders causing the engine to run rough..

Where is the PCV valve on a 1986 Pontiac 6000 STE?

to the Owner of the 1986 STE: I own two 1985's STE's and I noticec the PCV valve is on the front valve cover. I hope this will be of some help. Most Sincerely, Kristopher Gerbracht www.kristopher.gerbracht@juno.com

Where is the PCV valve on a 1998 expedition?

on the left falve cover close to the firewall (small black plastic cilinder with black rubber hose on top) just pull out to remove.

Where's the PCV for a 2001 Explorer?

The PCV valve on the 4.0 L is in the top of the driver's side valve cover towards the firewall, and on the 5.0 L V8 it is in the top of the intake manifold near the back of the manifold.

Where is the PCV valve located on a 1997 Chrysler Concorde?

if its a3.3 engine its located at the back of the planum, follow rubber vacuum hose comming out of the valve cover to the PVC on the planum

Where is the PCV valve on a 2002 town and country?

On a 2002 Town & Country with a 3.3 Flex Fuel engine, it's located on the back-side valve cover, just about in the middle -- under the windshield wiper assembly. You can see the hose sticking up and can reach your hand back there to get at it. Some people remove the windshield wiper assembly to gain easy access (and change the rear sparkplugs while you have the assembly out).

Where is the PCV valve located on a 2000 Chevy Malibu?

Frt valve cover on the driver side, might be held down by strip of metal should also only need to be changed if you can't hear rattling inside of it

What happens in the upstroke of the piston in the crankcase in a four stoke engine?

On compression the air is compressed, and on exhaust it is forced out of the cylinder.

On compression the air is compressed, and on exhaust it is forced out of the cylinder.

Where is the PCV valve on a 2002 GMC Sierra 1500 5.3L V8?

PCV (positive crankcase ventilation)valves are almost always located on the valve cover.

I can not tell you positively where it is on this truck. It may be in the line that goes back into the intake cowling.

Call your local autoparts store or Dealership. The Dealership WILL help you if you call the parts dept. because they have an exploded view of the exhaust and pollution control system.

Y-THINK-Y

when you open the hood you will see a schematic by radiator and it shows location of the pcv valve. It also show routing of serpentine belt and pulleys

What makes the catalytic converter turn red in a 1988 Mazda?

Either the converter is partially clogged and needs replacing or you have a miss in the engine which is dumping raw fuel into the converter where it is being burned.

What happens if the snifter valve goes bad on the well system?

I think that is what caused my water lines to have too much air in the water

How to tell if my engine has a bad valve?

Which kind?

Exhaust or intake, run a compression test. A burned valve will show up as low compression on one cylinder. A blown head gasket will often show up as low compression on TWO cylinders.

If you suspect a bad PCV valve, jsut replace it as part of the tune-up.

Where is the PCV valve on a 2009 Toyota Camry?

The PCV (Positive Crankcase Ventilation) valve on a 2009 Toyota Camry is located on the engine valve cover. To access it, you'll need to remove the engine cover, and the valve is typically found on the driver's side of the engine. It may be necessary to disconnect some hoses or components for easier access. Always consult your owner’s manual or a repair guide for specific instructions.