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Engine noise I'm using synthetic 5w20 engine it good ?apparently thats what they recommend...Should i worry about the ticking noise on my 2005 lincoln navigator and how expensive is it to fix? Regards R

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You have the 5.4 3 valve engine in your Navigator, Ford has had various problems with noise from this motor. The cost of repair will vary because this noise cam come from different places, such as cam phasers, valve lash adjusters and sometimes the ticking noise is actually coming from the injectors which is considered normal. I would have it checked out by the dealer. -Jared

Posted on Nov 14, 2008


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1 Answer

Wrong oil

I wouldn't worry much unless it lasts for more than a few weeks after the next oil change. What you're probably hearing is the valves rattling. This is because of the very low consistency of the oil. I wouldn't recommend 5w20 for any engine personally, as when it is at normal operating temperature it's more like water then oil. I'd simply change the oil again after a couple days and let the new oil feed out any of the 5w20.

If this problem persists, I'd definitely take it to the shop to have checked just some internal damage occured.

On a side note, a good idea for you; get a can of oil treatment such as STP or Valvoline. This can help revive the consistency of the oil and possibly quiet that sound. But, it'll definitely help keep the oil where it should be.

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