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How do you know your PCV valve is bad?

How do you know your PCV valve is bad?

One way to check whether a PCV valve is functioning is to remove it from the hose or tube and shake it. If you can hear a metallic rattling noise, it’s likely in good working order. If you do not hear anything when you shake the valve, it is likely that it is no longer opening and closing like it should.

Does a 5.3 have a PCV valve?

The Silverado comes equipped with different sized motors, including the V5300 5.3L V8 engine. The vehicle is equipped with a positive crankcase ventilation (PCV) valve. The valve has the primary responsibility of removing gases from the exhaust, to reduce pressure buildup in the engine crankcase.

What does a faulty PCV valve cause?

Bad PCV valves can cause engine oil contamination, sludge build-up, oil leaks, high fuel consumption, and other engine-damaging problems, depending on the type of failure.

Does a 2005 Silverado have a PCV valve?

Your truck should have a “fixed orfice style” PCV valve and not the style with valve. The early model 5.3s had the valve style and they did allow some oil to be recirculated which is not what you want. Check it out, make sure it is a fixed orfice style and that it is free and clear in there.

Where is the PCV valve located on a 2006 Chevy Silverado?

The PCV valve is located at the rear of the engine on the side nearest to the brake fluid reservoir.

Does a 2007 Silverado have a PCV valve?

The PCV valve on the V6 engine in your 2007 Chevrolet Silverado should be located in the left (drivers) side valve cover – a hose will be attached which runs to the intake manifold.

What does a bad PCV valve sound like?

If the PCV valve or the valve hose is leaking, the engine might start making strange noises as a result. In particular, you might hear a whistling or a hissing sound coming from under your hood. This sound is caused by air rushing out of the hole in the valve or the valve hose.

How often should PCV valve be changed?

If you experience hesitation or surging or an oil leak, it may be a sign of PCV value problems. Your owners’ manual may give a recommendation for when the PCV valve should be replaced – usually between 20,000 mi/32,000 km and 50,000 mi/80,000 km.