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Location: Clifton Park, NY
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The EVAP code I'm getting is P0455 (system large leak detected.) Also P2189 and P0151. The valve cover and oil pan were leaking oil everywhere so I fixed that second (,,,first round of repairs was the new intake tube, cleaning the TB, EGR valve and the MAF sensor, and a new gas cap.)
Somehow oil was leaking onto the front downstream O2 sensor (and the cat heat shielding) and making a ton of smoke. I thought that maybe the oil leak from the valve cover was causing the P0151 (O2 sensor) error code because the thickest smoke was rolling off the O2 sensor.
Yesterday, I was under the car again (after 300 miles on the new gaskets) to track down a remaining small oil leak that's coming from the back of the engine. The leak source is the back passenger side corner; looks like is might be just above the CKP sensor. The sensor was very wet with old oil (and maybe new oil.) Hard to tell because there's oily grime everywhere, so I emptied a can of brake cleaner and will re-check that area soon.
Thank you DrFeelGood for schooling me on the CKP sensor. I saw that it was covered with oil sludge, but I didn't know what it was. The manual suggests removing it through the wheel well, but it looks accessible from underneath.
The CKP sensor harness connector is also saturated with oil. Who knows, that might cause a bad signal.
2006 Mazda6, 3.0L v6, six speed auto (all stock, and loving it.)
Last edited by TampaBay6; 02-06-2019 at 10:16 AM.
Reason: Information upgrade