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F150 4.6 to 5.4 Tune / Tuning

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Old 05-09-2011, 11:01 AM
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no, its a good observation..
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It HAS been sitting for a while 2 years...
the new 5.4 is fresh tho, about 3 weeks without a start..
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and I did change the fuel filter, made sure fuel was pumping thru too..
No change..
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I also made sure I had spark in all 8 plugs (I do)
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Old 05-09-2011, 08:16 PM
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if the gas was 2 years old that would definetely create a problem
Old 05-09-2011, 08:41 PM
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I hate to be the bearer of bad news, but if you had two year old gas being sucked into the motor you may have clogged your injectors. You might have gas being delivered to the fuel rail at the proper pressure and flow, but do you have a good spray coming from all the injectors? It really sounds like you have poor gas delivery to the cylinders.
Old 05-11-2011, 02:42 AM
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poor gas delivery to the cylinders
thats what Im thinking also.. in a few cylinders..
I might drop the tank clean it out an pump some fresh fuel.. im getting a lot of fuel sits on water posts..
wish this would solve it.. cant think of anything else that would be an easy fix...
Old 06-17-2011, 02:44 AM
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Lowce805 did you ever straighten your truck out mine does the same thing.same swap as you
Old 06-29-2011, 06:11 PM
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dodge killa :sorry for the late reply but are you having prolems?
Old 06-29-2011, 08:22 PM
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That's ok yup im still having problems
Old 07-04-2011, 12:35 PM
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Default update: FIXED!!

Check your grounds coming from your firewall.. the 2002 uses a plastic intake manifold MAKE SURE its on front bolt near the alternator.. I also replaced plugs, wires, and a coil pack to eliminate any other possablity.. Good Luck
if you have any question hit me up..
Old 07-04-2011, 03:02 PM
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Ok ill get in there tonight ill let you know thanks



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