Question about 2005 Lincoln Aviator

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Engine knocking Engine knocks when pressing on gas

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If this has an emblem showing DOHC then the problem is likely a Cam Phaser. You can look up info on the Web by browsing 2005 Lincoln Aviator Cam Phasers. The Ford engines also use this design.

The problem is that the Phaser automatically sets timing. Your engine is probably over advanced and each side can have different timing settings. Sometimes they sound like diesel engines.

When you read more about these engines you can at least be informed and ask a few questions at repair shops.

Now you might want to have the fuel checked out. Cheap gas will make knocking sounds. There are a few products like 104 Octane boost which may help. But if someone used E85, drain the tank. The fuel is too corrosive for your car.

Posted on Mar 25, 2014

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Posted on Jan 02, 2017

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When did you have the oil changed and how many miles does it have?

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Some knocking is due to low octane gasoline if you experience it at highway speed.

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