Knocking noise sounds like lifters -

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Knocking noise sounds like lifters

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Old 09-04-2013, 08:10 PM   #1
Aguillon Au
Join Date: Sep 2013
Vehicle: 2007 mustang v6 4.0
Location: Texas
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Default Knocking noise sounds like lifters

Hello I have a 2007 4.0 with 34k miles
It has this knocking noise that sounds like
If its lifters but its not i change the tensioner on
Driver side already
And the noise is sill there!
Need help please helpp me !
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Old 09-05-2013, 08:10 AM   #2
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For starters, any chance you're running a lighter weight oil than specified?
07 GT Prem: Alloy, MT, 3.55's, Steeda CAI w/Brenspeed tunes, FRPP Stingers, 275/40/18 Goodyear Eagle F1 A/S on SVT Cobras (OE GT500's), 14" shorty, Wheelskin side scoops & qtr window louvers, A-H rear window louvers, SHR honeycomb blackout panel, Sequentials, Hella Optilux Extreme XY fogs, Silverstars
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Old 09-05-2013, 12:21 PM   #3
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Are you running a tune?
'07 4.0 Coupe, 5spd mt, Tungsten Grey;
true duals w/ H-pipe and GT takeoffs, Tunable Induction CAI, BAMA custom tunes;
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Old 09-13-2013, 10:50 AM   #4
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Is it only at certain RPMs?
Ford Performance Package
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Old 09-13-2013, 01:24 PM   #5
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How about fuel injector tapping? Does it run rough? You should get a engine stethoscope and hunt around for the noise from there. Harbor Freight has them for cheap.
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