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Old 02-11-2014, 04:34 PM
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Okiebug003 Okiebug003 is offline
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Join Date: Aug 2008
Posts: 225
cam phasers for sure. I have a 2004 fx4 with the 5.4 and i have put new cam phasers in twice. i have almost 200,000 miles on it. If you have the work done make sure you are getting a new chain and guides, both times i had busted guides. If you hear a weird noise right when you start it in the morning you have guide issues too. what I wish i would have done is have them put in a high performance oil pump in when they changed out the phasers the first time. the real issue with these trucks is lack of oil pressure which results in little oil getting to the front part of the cam shaft. a high performance oil pump is supposed to get rid of this problem. I have also heard people raving about lockouts for the camshaft phasers. you have to get some programming work done with that. i ended up paying 2000ish first time 2500ish second time(they also pulled the engine and replaced the rear seal) good luck
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