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pcv valve

  1. Maintenance & Care
    My P0420 CEL code came up again after replacing my downstream O2 sensor a few months back. There has been no diminished engine performance, but my gas mileage was really poor 18-20mpg combined. Also an oil leak has flared up in front of the cylinder head by the valve cover. Even though I...
  2. Maintenance & Care
    Hi EXD fans. I just did today my PCV valve. I am not sure how many miles it had before it was replaced, but I did mine with around 40,000 miles. The old one still rattled but not as much as the new one. When replacing I did noticed that the vacuum hose was still the OEM so when i removed it...
  3. Maintenance & Care
    Have read some posts (e.g. http://www.elantraxd.com/forums/showthread.php?t=16087) where people stripped the threads of the PCV valve and the "whole thing" came off. Questions: 1. What does the "whole thing" refer to? 2. How to avoid having this happen to me? What exactly should and shouldn't...
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