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2004 F150 5.4L Engine with Condensation in the Oil Fill Cap and Poor Fuel Economy

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2004 F150 5.4L Engine with Condensation in the Oil Fill Cap and Poor Fuel Economy

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Old 01-26-2016, 09:24 AM
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Default 2004 F150 5.4L Engine with Condensation in the Oil Fill Cap and Poor Fuel Economy

I recently installed a remanufactured F150 (after a loose timing chain destroyed the block...).

I'm now getting white milky oil in the fill neck and cap. I replaced the valve cover with the PCV valve in it and that didn't help. Here are a couple of pictures taken 300 miles after cleaning the cap.





This engine is in a 2004 Ford F150 FX4 and I'm only getting 11MPG on the new engine. I was getting around 15MPG with the previous engine.

I'm getting no engine codes of any kind.

Are these issues symptoms the result of the same issue? If so, what might it be?

Thanks,

Brad

Last edited by breichert; 01-26-2016 at 09:30 AM.
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Old 03-20-2017, 11:25 AM
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I have a 04 5.4 also. I get the same condensation in the oil cap. I have read in several places this is normal from the oil vapors especially in the winter time.
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Old 05-01-2017, 06:18 PM
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What kind of driving do you daily? The shorter your trips, the more likely this sort of thing is. with that mileage, I'd assume you're not going very far.
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