Question about 2004 Nissan Titan

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Breather Where is the breather located on a Nissan Titan 2004?

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  • yadayada
    yadayada May 11, 2010

    it is a closed system it does not have a breather, it does have a crankcase fresh air tube from the engine to the air cleaner box.



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Air filter box is located in the front of the engine compartment, driver's side.

Posted on May 15, 2010


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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.

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.

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Mar 14, 2010 | 2004 Nissan Titan

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Back breaks are popping like they are locking up on my 2005 titan. Put new pads on it to see if that would help but it has made it worse.

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