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hey folks Scotty Kilmer here today we're
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diving into something crucial for your
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car's Health the PCV valve you know that
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little valve most folks forget about
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until it's too late we're talking about
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six sneaky signs of a bad PCV valve that
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can cost you big time if you ignore them
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I've seen it all in my years as a
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mechanic and trust me you don't want to
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mess around with this little guy so
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buckle up because we're about to save
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you a whole lot of trouble now the first
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sign your PCV valve is acting up is
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increased oil consumption you see this
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valve regulates the flow of crank case
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gases those nasty fumes from your engine
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when it's clogged or stuck those gases
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can't escape properly and they end up
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getting sucked back into the intake
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manifold this creates a vacuum in the
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crank case pulling oil along with it and
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before you know it you're adding a quart
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every other week now some oil
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consumption is normal as your car ages
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but if you're suddenly topping off every
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other filp that's a big red flag don't
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just ignore it and hope it goes away
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because it won't check that dip stick
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regularly and if you see the oil level
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dropping like a rock you know what to do
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the second sign you got a bad PCV valve
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is engine misfires you see that messed
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up air flow caused by the faulty valve
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can really throw off your engine's air
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fuel mixture too much air not enough
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fuel boom you got yourself a misfire and
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let me tell you misfires are not your
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friend they can lead to rough idling
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hesitation when you step on the gas and
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even a decrease in fuel economy now a
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lot lot of things can cause misfires but
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if you're experiencing them along with
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other symptoms on this list that PCV
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valve is a likely culprit now let's talk
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about sludge you know that nasty black
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Gunk that builds up inside your engine a
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bad PCV valve can actually contribute to
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sludge buildup see when those crank case
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gases can't escape properly they
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condense inside the engine mixing with
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oil and forming a thick gooey mess this
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sludge can clog up oil passages star
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your engine of lubrication and
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eventually lead to catastrophic engine
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failure yeah you heard me right
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catastrophic and nobody wants that
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chapter 4 poor fuel economy next up we
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got poor fuel economy now as I mentioned
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earlier a bad PCV valve can mess with
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your engine's air fuel mixture when your
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engine's not getting the right mix it
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has to work harder and that means
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burning more fuel so if you're noticing
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a sudden drop in your gas mileage and
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you've ruled out other culprits like a
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lead foot or underinflated tires that
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piece PV valve could be the culprit
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chapter 5 check engine light now this
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one's a no-brainer but I got to mention
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it a faulty PCV valve can trigger the
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dreaded check engine light on your
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dashboard you see modern cars have all
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sorts of sensors monitoring your
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engine's performance and when that PCV
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valve starts acting up Those sensors
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pick up on it now the check engine light
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can mean a million different things from
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a loose gas cap to a serious engine
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problem but if you're experiencing other
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symptoms on this list along with that
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glowing check engine light there's a
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good chance your PCV valve is the
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culprit chapter six high idle RPM and
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finally the last sign of a bad PCV valve
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is high idle RPM now your engine's idle
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speed is controlled by the idle air
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control valve or IAC for short but guess
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what a faulty PCV valve can mess with
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the iac's operation causing your engine
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to rev higher than normal at idle this
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can be annoying for sure but it can also
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put unnecessary wear and tear on your
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engine over time so if you notice your
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engine racing at a stoplight and you've
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already checked for vacuum leaks and
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other common culprits that PCV valve
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might be the root of the problem so
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there you have it folks keep an eye out
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for these signs and save yourself from
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costly repairs remember a PCV valve is a
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cheap and easy fix especially compared
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to a blown engine or other major
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problems don't wait until it's too late
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and hey if you found this video helpful
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give it a thumbs up subscribe to the
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channel for more car care tips and don't
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forget to hit that Bell icon so you
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don't miss any future up loads speaking
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from car justify reminding you to stay
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safe out there on the road and keep
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those engines running smooth
