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Pcv valve maintenance - Milan Mercury Cars & Trucks

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What is a pcv valve

  • How the PCV system works - Agco Automotive What are the Symptoms of a Bad PCV Valve. ... Symptoms of a bad PCV valve. We see varied symptoms from a bad PCV valve, depending on the way it fails.
  • Crankcase ventilation system - Wikipedia, the free ... The PCV valve is only one part of the PCV system, which is essentially a variable and calibrated air leak, whereby the engine returns its crankcase combustion gases ...
  • How does a positive crankcase ventilation (PCV) system ... How does a positive crankcase ventilation (PCV) ... Positive crankcase ventilation involves recycling these ... the PCV valve is designed to close off when this ...
  • What does the PCV valve do? - What does the PCV valve do? By Jakob Jelling The PCV valve is a control device which sends partially burned gases that come from the engine's ...
  • Jan 17, 2016 | Cars & Trucks

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    How do I replace the pcv valve on a 1987 nissan pickup?

    Here's a link to replacing your pvc valve. Repair Guides Routine Maintenance Pcv Valve AutoZone com After you remove it,shake it,if it rattles then it's good.

    Mar 24, 2015 | 1987 Nissan Pickup

    2 Answers

    When I have to replace PCV valve

    The PCV valve is only needed to be replaced when it no longer works properly. Look for the PCV valve and disconnect it from the engine and from the vacuum supply.. The valve should be clean and rattle when shook.
    Symptoms of a failed PCV can be poor idle quality, oily residue in the air inlet of the intake manifold or possibly fail emissions test.

    Apr 28, 2014 | 2006 Ford Five Hundred

    1 Answer

    Oil coming from filler cap

    Sounds like your pcv valve is clogged causing the oil to back up.Here's a link on how to replace. Repair Guides Routine Maintenance And Tune up Positive Crankcase... Here's the part,and it's easy to do. AZ Filters PCV Valve PCV1142DL 1990 Nissan Datsun Pulsar 4 Cylinders 1...

    Feb 02, 2014 | 1990 Nissan Pulsar

    1 Answer

    PCM Valve inside transmission?

    I would try another shop, A PCM Valve is not typically that hard to replace from my experience in older model Fords it sits up on top of the motor near the Crankcase.

    The blowby vapors that end up in an engine's crankcase contain moisture as well as combustion byproducts and unburned fuel vapors. The crankcase is sealed to prevent the escape of these gases into the atmosphere, but the vapors must be removed to prevent oil contamination that leads to sludge formation. The positive crankcase ventilation (PCV) system siphons these vapors from the crankcase and routes them into the intake manifold so they can be reburned in the engine.
    The main component in the PCV system is the PCV valve, which is usually located in the valve cover. A hose connects the PCV valve to the intake manifold. A second hose between the air cleaner and crankcase or other valve cover (V6 or V8 applications) provides fresh air to help flush the vapors out of the crankcase. Some engines have a separate air filter for the PCV breather hose located inside the air cleaner. The PCV valve is a spring-loaded valve with a specific orifice size designed to restrict the amount of air that's siphoned from the crankcase into the intake manifold. This is necessary because air drawn through the valve from the crankcase has a leaning effect on the fuel mixture much the same as a vacuum leak. So air flow through the valve must be controlled within certain limits. At idle, air flow is reduced because little blowby is produced. When the engine is cruising and vacuum is high, airflow through the PCV valve is at a maximum to purge the blowby vapors from the crankcase.
    It's important to note that PCV valves are sized for specific engine applications. The wrong PCV valve for an application can flow too much or too little air causing driveability problems. Varnish deposits can clog the valve, so replacement for preventative maintenance is recommended (every 50,000 miles usually).
    Not all engines have PCV valves. Some (like Ford Escort, GM FWD cars with the Quad Four engine, etc.) ventilate the crankcase with a small breather hose and calibrated orifice. There is no spring-loaded PCV valve. On these applications, no maintenance is usually necessary.

    All this to say that if this shop does not know this then i would look for another shop. Try going to the Better Business Burea for your area online and check some shops that have beenin business for a while. Also read customer reviews before making a decision and call them to ask some questions to see if they have ever done one of these replacements before.
    Hope this helps, Good Luck!!

    May 29, 2012 | 2007 Ford Freestyle

    1 Answer

    Engine surges at idle and in park, i changed the IAC control but it didn't fix the problem. could the problem be the map sensor

    Could be, but check the pcv valve and hose first, they have problems. Actually, just change the pcv valve it's maintenance and cheap.

    Mar 19, 2010 | 1996 Honda Accord

    1 Answer

    Changing pvc valve

    1995 Geo Truck Tracker 4WD 1.6L TBI SOHC 4cyl
    The PCV Valve is located under hood, center, upper engine area, top of engine, mounted in passenger side of intake manifold.

    The low gas mileage and the versatility that your 1995 through 1999 Geo Tracker offers are two benefits of owning it. The maintenance needs to be kept up on your Geo Tracker. One form of this maintenance is to replace the valve cover gasket once you have driven 100,000 miles or more.
    1. Allow your engine to cool. Disconnect the negative battery cable. Remove the air inlet hose and air intake case or air cleaner housing. Detach the PCV valve hose from the PCV valve. Separate and remove the spark plug wires and the accelerator cable from their clips.
    2. Loosen and remove the valve cover bolts. Lift the cover up and off. Using a flathead screwdriver, gently nudge the gasket out of the gasket seating area. Using automotive engine cleaner and a clean cloth rag, clean the gasket seating area.
    3. Place the new gasket in the gasket seating area. Put the cover back into place. Put the bolts in and then using a torque wrench tighten them. Do not over tighten the bolts or the gasket will not fit correctly. Reconnect the spark plug wires and the accelerator cable in the holding clips.
    4. Reconnect the rubber hose to the PCV valve. Install the air intake case, or air cleaner housing, and the air inlet hose. Reconnect the negative battery cable. Add oil to the car and start the engine. Allow the car to run 10 to 15 minutes. This will allow the oil to lubricate the engine while it moves to the top.
    I hope helps with this (remember rated this help) Good luck.

    Dec 29, 2009 | 1995 Geo Tracker

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