loud noise under the hood when starting my 2003 lincoln navigator

2003 LINCOLN NAVIGATOR
120,000 MILES
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LDUGGER
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  • 1 POST
tapping noise on passenger side and the motor and rattling noise under the hood upon startup only when cold.
Dec 21, 2011 at 4:31 PM
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HMAC300
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  • 48,601 POSTS
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.
Dec 21, 2011 at 5:48 PM