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    Startup rattle, 2004 Navigator 5.3 l 4V

    We just picked up a Navigator and it has a rattle for 5-10 seconds after a cold start. After that it goes away. Does it sound like a timing chain tensioner issue? Do the ting chains pump up with oil pressure? Is there any way to test or replace them short of removing the front covers...
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    New 2004 Navigator ownee

    We just bought a super clean 2-owner 2004 Navigator this week and I'm looking forward to getting it cleaned up and driving it more. A few years ago I bought a cheap 03 Navigator sight unseen, and once I saw it I knew why it was cheap. It ran and drove but needed everything. We sold it off and...
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