Loud noise under the hood when starting my 2003 Lincoln Navigator

Tiny
LDUGGER
  • MEMBER
  • 2003 LINCOLN NAVIGATOR
  • 120,000 MILES
Tapping noise on passenger side and the motor and rattling noise under the hood upon startup only when cold.
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Wednesday, December 21st, 2011 AT 4:31 PM

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Tiny
HMAC300
  • MEMBER
Check to make sure your oil level is full. This can be a vlave lifter noise, from getting dirt in it. Try putting a quart of ATF in if oil level is low, that helps to clean them out. You could use rislone as well they are available at auto parts stores. If you use rislone, change oil after 200 miles.
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Wednesday, December 21st, 2011 AT 5:48 PM

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