Shake your PCV valve
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PCV valve replacement
Pull off the hose and remove the old valve. If it's bad, screw in a replacement and replace the hose.
This sounds complex, but it's not.
Pull out your PCV valve every other
oil change. In most cases, you'll find
the valve on the top of the engine,
connected to a vacuum hose. Some
late-model cars don't have PCV
valves, so don't beat yourself up trying
to find it. Slide the vacuum hose
off the valve and unscrew the valve.
Then perform the world's easiest
diagnostic test: Shake it. If it makes a
metallic clicking sound, it's good. If
it doesn't make noise or sounds
mushy, replace it. But don't
replace it on appearance alone—all
used PCV valves look dirty.
Need help locating your PCV
valve? Buy a short subscription to
an online factory service manual
(oem1stop.com); rates start at about $10 a
day. Non-factory manuals are cheaper,
but they're skimpy on instructions
and diagrams for these kinds of