Tapping noise at start up and during driving

Tiny
FORDEXPLORER96
  • MEMBER
  • FORD EXPLORER
1997 Ford Explorer XLT 4.0 V-6 SOHC
Automatic, 240,000 miles


tapping noise at start up and during driving "sounds like a diesel" x 3 days. Changed oil yesterday, added 5 quarts synthetic oil, filled with higher octane gasoline, radiator drain and fill completed. No distinct smells or visible fluid leaks noted.
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Monday, November 19th, 2007 AT 6:26 PM

2 Replies

Tiny
BERGER
  • MEMBER
  • 2 POSTS
It could possibly be the valve lifters, mine do the same thing every once in awhile it's mor annoying than anything else but don't let it go on too long without it being checked out.
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Monday, January 28th, 2008 AT 7:00 PM
Tiny
MUSTANG87
  • MECHANIC
  • 261 POSTS
Its also possible that the knock sensor is bad.
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Tuesday, January 29th, 2008 AT 9:14 PM

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