04 5.4 knocking
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Joined: Feb 2005
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From: michigan
04 5.4 knocking
I have a 2004 F150 that started knocking a couple weeks ago. I have 173,000 miles on it. seems to have the same power and same mpg. when i first start it up it sounds fine and then after it warms up it sounds like a diesel when idiling! serious problems?? i have always used 5w-20 motorcraft oil and all but 3 times used motorcraft filters (1 fram and two penzoil the other times) please help! thx!
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