PCV Valve Failure: Signs and Replacement
Quick Answer: A failing PCV valve causes rough idle, increased oil consumption (1+ quarts per 1,000 miles), oil leaks from gaskets and seals, whistling or hissing sounds from the engine, and check engine codes P0171 (lean condition) or P0101 (MAF sensor issues). Replacement costs $15-$35 for DIY or $75-$300 at a shop, depending on valve … Read more