loud knock

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Oct 7, 2013 | 09:56 AM

chezj5

Thread Starter

Junior Member

Joined: Feb 2013

Posts: 6

Likes: 0

loud knock

I have 04 Lariat 5.4 , when going up hill under a load at 80 km/h it knocks load like timmimg is out .Taken it to shop cant find problem . any have an idea what it is

Oct 7, 2013 | 12:57 PM

diamonbird

08 F150 LIMITED

Joined: Sep 2010

Posts: 298

Likes: 18

From: Mechanicsville Va.

Best guess: bad fuel

Oct 8, 2013 | 07:39 AM

tbirdtommy

Senior Member

Joined: Feb 2011

Posts: 161

Likes: 5

From: Erie PA

I work at a parts store up in Pa and a lot of people are getting this

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