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question about maf sensors

Originally Posted by Z_ealot Shouldnt there be no oil in the pcv hose though if the valve is functioning correctly? Oil coming through the PCV and into the intake is

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Old 07-08-2017, 07:11 PM   #1 (permalink)
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Shouldnt there be no oil in the pcv hose though if the valve is functioning correctly?
Oil coming through the PCV and into the intake is completely normal. The PCV system does not discriminate oil and vapor from clean air.
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Old 07-08-2017, 07:21 PM   #2 (permalink)
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Oil coming through the PCV and into the intake is completely normal. The PCV system does not discriminate oil and vapor from clean air.
What would you suggest is causing the lean condition then? Fyi LTFT is considtently over negative 10% with STFT going up to over 15%
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