fastcatexpress
New Member
have a used used 97 5.4 engine with 85k on it trying to deside weather or not to change out timing chain and tensioners and guides? before droping it in my 97 expedition. oil look kind of dirty in it !
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Why would you change out parts that normally last 200 thousand miles? You could pull the timing cover, inspect the chains, guides. If OK, replace timing cover seal, and gasket. I would as Stamp stated, change valve cover gaskets before installing, along with new Motorcraft sparkplugs. Much easier to do now than later. Other than that, have at it!
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Habbibie if its really 85k that's just changing parts to change parts. That's why I said pull the cover, check for slack. If that mileage is for real it should be a virgin in there! If not whoever sold the motor, lied his ass off to sell a motor!
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+1 I have 211k on my 5.4L. Timing chain isn't on my list of things to worry about because I change the oil. The Mustang I bought and ended up building with my son for his first car; however, is a different story lol Like these parts? Same thing, only different... We bought it this way from a girl. Rapping like Run DMC.That engine's young at 85K. They normally go well past 200K with good oil changes.