Question about 1995 Nissan Altima

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Changing PCV valve

I found the PCV valve on my 95 Altima buried under the in take manifold. For the life of me I could not figure out how to gain access to the darn thing to change it out.  
I had a very reputable local mechanic shop try and replace it and they said they worked for 45 minutes using three ratchet extensions trying to gain access to the PCV valve.  No joy.  Nissan said they would change it.....but it would cost me $124 (for a $7 part and threaded fitting).  Sounds like an awful lot in labor to change the valve.
Has anyone successfully changed the PCV valve on their own and what was the secret to gaining access to it?  Right now I think my only option is to remove the intake manifold.
Thanks

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  • booman70 Feb 24, 2009

    having the same problem with my 97 altima. Have heard removing the oil filter and filter base makes it easier to get haven't had the time to try this yet. What a poor place for a part that should be change periodically.

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The pcv valve goes in the breather separator the power stearing pully is directy under it there are two 10 mm bolts on top and one under the breather separator, pull the bolts and the clamp on hose. remember the separator is siliconed onto the intake so separate with knife and pull on it. it will be hard but will come. dont forget to clean serface before re siliconing it.

Posted on Sep 04, 2009

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Where is the pcv valve in a 1980 chevy luv truck location


Jill, if this is a 1.8L then it should be buried up under carb on the intake manifold

Apr 17, 2016 | Cars & Trucks

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Location of pcv valve 95 nissan KA 24 engine hardbody


Follow the breather hose(s) to where they meet the engine and that is where the pcv valve is usually to be found if your engine has one; valve cover, crankcase or inlet manifold are the likely locations.

Not all engines use a pcv valve. Many engines just have a tiny hole into the inlet manifold which typically soon blocks and needs cleaning.

Ford was one of the manufacturers who in the early days of a pcv system being required, used an oil filler cap to attach the breather system to and the tiny hole was inside the cap along with the flame trap and oil mist filter.
That like many of the plastic pcv valves was intended to be a throw-away item.

I hope I have helped you a little.

Feb 05, 2015 | Cars & Trucks

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Car starts but doesnt stay running


vacuum hose goes to intake manifold look for port on intake manifold the vacuum hose control probably pcv valve an
egr valve depends vechicle type.

May 22, 2013 | Cars & Trucks

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Can pcv valve cause throddle like symptom on 1994 nissan altima


Pcv system is kind of nose of the engine.
If you clag your nose and try to run for couple miles you gonna have breating problems need more air . so positif crankcase ventilation is controls by spring calibrated valve which we call pcv is collects blow by gases(this gases still rich for oil and unburned fuel molekuls) when engine needs it pcv opens and retun this gases into intake manifold to help emisions and reburn this rich vapors . however this return vapors also bring extra oil rich sticky debris to throttle which can cause late responds and lost of power.
you should replace pcv valve fallow all small vacuum lines and inspect hoses for any crack or leak replace if necesary with same size emission prof hoses and clean your throttle body with throttle body cleaners with manufacty service information.
Y

Aug 01, 2012 | 1994 Nissan Altima

1 Answer

Donde queda el pcv valvula en el motor


The PCV valve on Altimas looks different than what has been common for years on most engines. The PCV valve is located at the drive belt side of the engine under the intake manifold and attached to the breather/separator. Access from above is very difficult; access the valve from underneath the vehicle. There is a short hose that connects to the breather/separator.

Remove the breather/separator and the hose. Then you can unscrew the PCV valve from the breather/separator for easy inspection and cleaning of each piece. Also inspect both passages where the separator and hose connect. Here is a picture of the valve after it is removed. The breather/separator is a small aluminum housing that will fit in your hand.

http://www.rockauto.com/catalog/moreinfo.php?pk=56137


Obviously the PCV system is more difficult to service on Altima engines than the more familiar design on so many other engines. A restriction in the PCV system will increase crankcase pressure. This pressure inside your engine will push oil out where ever it can find a place to leak, including into the distributor.

Hope helps.

May 06, 2011 | 2000 Nissan Altima

1 Answer

Where would the pvc value be on a 300 chrysler 2006? also where would the spark plugs be located?


Positive Crankcase Ventilation (PVC) Valve Removal & Installation 5.7L Engine To Remove:
    1.The PCV valve is mounted into the top/right side of the intake manifold.

    2.The PCV valve is sealed to the intake manifold with two O-rings.

    3.Free the PCV valve by rotating counter-clockwise 90 degrees until the locating tabs align with the openings on the manifold.

    4.Remove the PCV valve by pulling straight up from intake manifold and clearing the tabs.

    5.Check the condition of two valve O-rings.
To Install:
  1. Clean the PCV valve opening on the intake manifold.
  2. Inspect the PCV valve O-rings. Replace if suspect.
  3. Apply engine oil to the two O-rings.
  4. Place the PCV valve into intake manifold.
  5. Rotate the valve 90 degrees clockwise for installation.
6.1L Engine To Remove:
  1. The PCV valve is threaded into the right-front corner of the intake manifold.
  2. Remove the rubber hose from the PCV valve.
  3. Unscrew the PCV valve from the intake manifold.
To Install:
  1. Clean the PCV valve opening on the intake manifold.
  2. Check the condition of the PCV valve O-ring. Replace if suspect.
  3. Check the condition of the PCV valve threads and clean if necessary.
  4. Apply engine oil to the O-ring.
  5. Install the PCV valve into intake manifold.
  6. Install the rubber hose to the PCV valve.
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The spark plugs should lead to the coil pack via a spark plug wire but may be hidden by a plastic cover.

The following details the ignition coil changing on the Chrysler 300:

2.7L Engine To Remove:
  1. Disconnect the negative battery cable.
  2. Remove the intake manifold.
  3. Use compressed air to clear the area around the ignition coil and spark plug.
  4. Disconnect the electrical connector from the ignition coil.
  5. Remove the two fasteners securing the ignition coil.
  6. Remove the ignition coil.
To Install:
  1. Install the ignition coil.
  2. Tighten the fasteners to 55 in-lb (6.2 Nm).
  3. Connect the electrical connector to the ignition coil.
  4. Install the intake manifold.
  5. Connect the negative battery cable.
3.5L Engine To Remove:
  1. Disconnect the negative battery cable.
  2. Remove the intake manifold.
  3. Use compressed air to clear the area around the ignition coil and spark plug.
  4. Disconnect the electrical connector from the ignition coil. NOTE: Loosen the ignition coil fasteners by alternating back and forth. Do not lose the spacers under the coil when loosening the fasteners.
  5. Remove the two fasteners securing the ignition coil.
  6. Remove the ignition coil.
To Install:
NOTE: Tighten the ignition coil fasteners by alternating back and forth. Do not lose the spacers under the coil when installing the coil.
  1. Install the ignition coil.
  2. Tighten the fasteners to 60 in-lb (6.7 Nm).
  3. Connect the electrical connector to the ignition coil.
  4. Install the intake manifold.
  5. Connect the negative battery cable.
5.7L Engine (2005) To Remove:
NOTE: Carefully note the position of each spark plug cable before disconnecting them so they can be installed in their original positions to prevent misfire.
NOTE: The throttle body intake air duct or intake air box may need to be removed to gain access to certain ignition coils.
  1. Disconnect the electrical connector from the ignition coil.
  2. Remove the secondary ignition cable from the coil.
  3. Use compressed air to clear the area around the ignition coil.
  4. Remove the two fasteners securing the ignition coil. Bolts are retained to coil.
  5. Remove the ignition coil. Pull with a slight twisting motion to help release the boot seal with the spark plugs.
To Install:
NOTE: Apply a light film of dielectric grease to the inside of the coil boots before installation.
  1. Clean area around spark plug and coil mounting area with compressed air.
  2. Install the ignition coil.
  3. Tighten the fasteners to 105 in-lb (12 Nm).
  4. Connect the electrical connector to the ignition coil.
  5. Connect the secondary ignition cable to the coil.
  6. Install the air duct or air box if removed.
Ignition coil mounting bolts (5.7L & 6.1L engines) chry-02-57-263.gif

5.7L (2006) & 6.1L Engine To Remove:
NOTE: Each ignition coil, mounted on the valve cover, fires two spark plugs at each cylinder.
  1. Disconnect the negative battery cable.
  2. Use compressed air to clear the area around the ignition coil and spark plug.
  3. Disconnect the electrical connector from the ignition coil.
  4. Remove the two fasteners securing the ignition coil.
  5. Remove the ignition coil. Pull with a slight twisting motion to help release the boot seal with the spark plugs.
To Install:
NOTE: Apply a light film of dielectric grease to the inside of the coil boots before installation.
  1. Install the ignition coil.
  2. Tighten the fasteners to 105 in-lb (12 Nm).
  3. Connect the electrical connector to the ignition coil.
  4. Connect the negative battery cable.
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Sep 24, 2010 | 2005 Chrysler 300

2 Answers

Where is the pcv valve


on the inlet manifold,if your having a problem with the idle then remove the engine breather pipes that are just under the inlet manifold ,they are split and collapsed and the engine will not idle it will fluctuate like crazy

May 27, 2010 | 2007 Ford Focus (3 Door) Hatchback

1 Answer

1994 lexsus ls400


you may have a bad pcv valve, too much crank case pressure will cause it. replace your pcv valve will help.

Mar 18, 2010 | 1991 Lexus LS 400

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