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Before you go through the trouble, did make sure it is bad first? Do you know how to check one?

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โˆ™ 2015-07-15 19:12:57
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Q: How do you replace the PCV valve and hoses for a 1999 Ford Expedition with a large V8?
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It is in the driver side valve cover, you must change the valve cover to replace the PVC valve.

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The PCV valve is located on the passenger side valve cover. It cost about $3.00 to replace. Simply pull up on the vacuum line and the PCV will more than likely pull out of the gromlet. It may take a little effort, but pull the PCV valve from the line and install a the new one.

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Check your PCV valve. This valve helps relieve pressure within the engine. It is usually located somewhere on the valve cover. How it works is when the pressure within the engine builds up, the valve opens to relieve some of the pressure so it does no push against internal parts which can cause gasket failure. If your PCV valve is not opening properly the first thing to go would be the vacuum hoses. Just replace the PCV valve, it is cheap and easy, good place to start.

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