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Knocking noise when starting

Tiny
JEFFRD390
  • MEMBER
  • 1997 FORD EXPLORER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 194,000 MILES
97 ford explorer knocking noise when starting then goes away when running started to hear it when it got cold outside
Wednesday, December 15th, 2010 AT 1:37 AM

4 Replies

Tiny
DAVE'S BIG BACKYARD!
  • MECHANIC
  • 262 POSTS
Main barings in the engine.
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Wednesday, December 15th, 2010 AT 2:33 AM
Tiny
JEFFRD390
  • MEMBER
  • 19 POSTS
Wouldn't I hear knocking as its running if it was that
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Wednesday, December 15th, 2010 AT 2:44 AM
Tiny
DAVE'S BIG BACKYARD!
  • MECHANIC
  • 262 POSTS
You can if you rev the engine just right but dont over do it. And it has to be fully warm. Hold at high idle and about 2000 rpm's then take up to 3000 and let off. Listen for the rattle.
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Friday, December 17th, 2010 AT 2:10 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Check that the oil filter is a quality unit with an anti drain back valve fitted, replace if not and re check.

Mark (mhpautos)
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Tuesday, December 21st, 2010 AT 9:29 PM

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