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Ray M.
Ray M., Ford Master Tech
Category: Ford
Satisfied Customers: 3034
Experience:  30+ years in trade, Ford Master Tech, Journeyman Automotive Tech
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Just bought 2008 f150 fx4. Dealer had mechanic replace "cam

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Just bought 2008 f150 fx4. Dealer had mechanic replace "cam phasers?" After it warms up really rough idle and knocking noise. This doesn't happen all the time, but more after hot.
JA: Is the rough idle intermittent or consistent?
Customer: Intermittent. It goes away by itself if still idling, or if I give it gas
JA: Are you fixing your F150 yourself? What have you tried so far?
Customer: No. I just picked it up today.
JA: Anything else you want the mechanic to know before I connect you?
Customer: No

Have them check the oil pressure in the engine with a master gage, these engines wear the camshaft journals and allow oil to leak by, this causes the oil pressure to fall low enough it wont operate the camshaft phasers properly.

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