Crankcase ventilation hose, valve cover to intake?

The piece is broken and I don't want to replace valve cover if I can just replace broken piece

My car has 125500 miles.

Experienced mechanics share their insights in answering this question :
Hello – this piece is part of the crankcase ventilation system, and has a PCV valve underneath. It vents crankcase fumes to the air intake system for combustion, regulated by the PCV valve. This hose is available separately from either Ford or other aftermarket parts suppliers. A mobile professional mechanic, like one from YourMechanic.com, can come to your location and replace this PCV valve hose at your location.

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Common signs of a faulty PCV valve include excessive oil consumption, oil leaking, a blocked breather filter, and reduction in overall performance.
This is now considered the beginning of automobile emission control. Positive crankcase ventilation involves recycling these gases through a valve (called, appropriately, the PCV valve) to the intake manifold, where they`re pumped back into the cylinders for another shot at combustion.
The PCV valve controls the flow of crankcase gases entering the intake system. At idle, with almost closed throttle, the manifold vacuum is high, which would draw in a large quantity of crankcase gases, causing the engine to run too lean.
Over time, the PCV valve and its related components are exposed to extreme temperatures and pressures. Prolonged exposure to these forces can cause these parts to swell, stick in place, or even grow brittle and crack.
A PCV valve that`s stuck open will allow too much air to enter the intake manifold, leading to a leaner idling fuel-air mixture. Stuck closed leads to a build up of pressure in the crank case which creates a variety of oil leaks! And this in turn can lead to a range of issues, including a rough idle.
PCV stands for positive crankcase ventilation . CCV stands for Crank Case Ventilation Valve , They do the same job suck fumes from the crankcase into the inlet manifold where they are burnt in the cylinders combustion stroke.
A typical PCV system should be pulling about 1 to 3 inches of vacuum in the crankcase at idle. If you see a significantly higher vacuum reading, the intake manifold gasket is probably leaking and pulling vacuum on the crankcase. Replace the leaky intake manifold gasket, if so.
The PCV system also helps the engine make a little more power. The slight vacuum in the crankcase improves the seal of the piston rings and valve stems. This keeps the compression in the chamber, where we want it. A PCV system also reduces windage and oil aeration.
A clogged hose or PCV system or inoperative valve can increase oil consumption because pressure builds when the vapors in the crankcase aren`t allowed to flow into the combustion chambers. That additional pressure can force oil past seals and gaskets.
Blow-by gases are mixed with oil mist and other contaminants that can harm an engine`s internal components and contaminate the environment. A high-efficiency crankcase ventilation filter is needed to clean the vented gases before returning to the engine`s intake or discharging to the environment.
Answer: If the valve fails, pressure can cause acid vapor through the breather element. It`ll combine with the air-fuel in the intake; after some time you may see buildup.
If the PCV valve failed, it would essentially keep mixing the engine oil with air and gases inside the engine. And the vehicle would emit blue smoke from the exhaust upon combustion of this mixture. A bad PCV valve could cause major engine trouble if ignored.
Consult your owner`s manual to see where the PCV valve is located on your vehicle and what the recommended service intervals are. The valve is usually replaced during scheduled tune-ups, but depending on its type and location, you may be able to check, clean, and replace it yourself.
Can WD40 be used to clean PCV valve? WD40 can be used to clean the PCV valve but it is not recommended. WD40 is a lubricant and not a cleaner. It will do little to remove the carbon buildup and may make it harder for you to get the valve out in the first place.
Specifically, if the PCV valve malfunctions, or is stuck open, it allows some of the oil that is used to lubricate the pistons and cylinders to escape. This wayward oil can then find its way to the surface of the engine`s spark plugs, resulting in a condition known as “oil fouling.”
Will a bad PCV valve burn oil? No. A bad PCV valve will not cause your vehicle to burn oil. In fact, if you have a leak in the PCV system, it is likely that you will be losing some of the oil from the crankcase into the intake manifold and then into the combustion chamber.
Because the PCV valve controls the flow of blow-by vapors from the crankcase to the intake manifold, a faulty or broken PCV valve can manifest itself in the same way as an intake air leak. A bad PCV valve can cause the idle RPM to get too high and unusual idle behaviors like very rough idling.
Diesel engines are not required to have these valves. The positive crankcase ventilation (PCV) valve routes crankcase gases through a hose and back into the air intake system where they are re-burned in the engine.
When the ventilation valve becomes stuck in the open or closed position, or there is a disconnection of the system hose, the CCV fails. When it fails, you may notice the following symptoms: Illumination of Check Engine Light: A failure of the CCV valve may cause a too lean or too rich fuel/air mixture.
When your PCV valve is malfunctioning, it throws the air to fuel mixture out of balance and can lead to poor performance and rough idle, as well as misfires. In the very short term, these issues should not damage your car, but if you don`t fix the issue, you can do lasting damage, so it`s best to get it fixed promptly.
Reduced Fuel Economy

We`ve touched on this symptom a few times so far, but it deserves its own entry. Without a functional PCV valve, your car will see reduced fuel economy, so you`ll end up paying more than you should at the pump through more frequent fill-ups.

The packed cell volume (PCV) can be determined by centrifuging EDTA-treated or heparinized blood in a capillary tube (also known as a microhematocrit tube) at 10,000 RPM for five minutes. This separates the blood into layers.
If engine wear causes too much crankcase pressure it will overwhelm the PCV system and lead to excessive oil leaks. Excess crankcase pressure may also occur if the PCV system vacuum supply becomes restricted.
If the PCV valve is sticking enough, you could have oil leaks, excess oil consumption and a fouled intake system. If you experience hesitation or surging or an oil leak, it may be a sign of PCV value problems.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Crankcase ventilation hose, valve cover to intake? – Excursion 6.8 l
ANSWER : Hello – this piece is part of the crankcase ventilation system, and has a PCV valve underneath. It vents crankcase fumes to the air intake system for combustion, regulated by the PCV valve. This hose is available separately from either Ford or other aftermarket parts suppliers. A mobile professional mechanic, like one from YourMechanic.com, can come to your location and replace this PCV valve hose at your location.

Please help me figure out where my PCV valve and PCV Hose is!!!
ANSWER : Hi there. The PCV valve is located on bank 1; the valve cover closest to the cabin. It is usually found under the intake plenum towards the passenger side of the vehicle. The hose will be attached; or loose. Please understand that a code retrieval and an internet search is not a proper diagnosis as there are several other possibilities that can cause the code to set. Some of the possible causes could be spark plugs, ignition coils, intake manifold leaks, intake plenum leaks, vacuum hose leaks, failing airflow meter, failing O2 sensors, exhaust manifold leaks, low fuel pressure, failing ECU, faulty wiring harness, failing injectors, etc… As you can see, the list of possibilities runs on and on. This is where the expertise and experience of a qualified technician with the proper diagnostic tools and procedures becomes invaluable. I strongly suggest having a qualified technician perform an inspection to avoid replacing unnecessary parts and determine the exact cause of the code. Your Mechanic has several available technicians that can assist you with a check engine light inspection.

Oil is geting into intake manifold and into all intake vavles.
ANSWER : Hi there. That type of oil volume inside the intake manifold is typically a sure fire indication of a blown head gasket. It’s also quite possible that this has occurred for an extended period of time. There are a few things that you can do to verify that this is the head gasket. First, check the oil itself. If it is milky or foamy then it means the head gasket is damaged and coolant is leaking into the oil galleys. If the head gasket is not damaged, excessive oil inside the spark plug well could also be a damaged O-ring but can also be the result of a failing piston or worn valve guides. Either way, the only way to correctly inspect and diagnose this would be to tear down the motor, so you might want to consider whether you are wanting to complete repairs or purchase a newer vehicle.

I have a 2001 Toyota Tundra 4.7 V-8. When replacing the valve cover gasket, what should I torque the valve cover back to when rein
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2012 chevy cruze lt 1.4 valve cover vacuum leak. waiting on parts in the mail.
ANSWER : It is possible to temporarily seal air (vacuum leaks). Any method that best creates a seal can be used. In particular, RTV sealant which is flowable can be used to seal a non moving crack so long as the surface that you are applying the RTV to is oil and dirt free (otherwise the RTV wont bond). The only concern with such temporary (or even permanent) repairs is that you do not get any foreign matter in the engine through any crack that you are trying to seal. If you want the PCV valve and/or the valve cover replaced you can request PCV/valve cover replacement service and the responding certified mechanic will get this taken care of. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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ANSWER : Hi there – manufacturers are using plastic for valve covers, intake manifolds, and other engine components more and more often for weight and expense savings. Unfortunately, with repeated heat cycles, some of these plastics become brittle, or warp and won’t seal properly. You may very well need to replace the valve covers for this reason, but it should not happen again during the life of your vehicle. For assistance, I would recommend a valve cover gasket replacement by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, and repair this problem.

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Car won’t start after doing valve cover job.
ANSWER : Hi there. From the description you have provided, something was reassembled incorrectly. Not replacing the upper intake (plenum) gaskets should not have caused the vehicle’s no start condition. Once that you have the plenum removed, carefully inspect all the components you disconnected to do the valve cover gaskets. Hopefully you locate the problem. You may want someone else to inspect it, while it’s apart. If you locate the problem, put it all back together with new gaskets and happy motoring. If you did not locate the problem and your vehicle does not start, I recommend having your vehicle inspected by a certified technician, such as one from YourMechanic.