knocking noise when starting

1997 FORD EXPLORER
194,000 MILES • 6 CYL • 4WD • AUTOMATIC
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JEFFRD390
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  • 19 POSTS
97 ford explorer knocking noise when starting then goes away when running started to hear it when it got cold outside
Dec 15, 2010 at 1:37 AM
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DAVE'S BIG BACKYARD!
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main barings in the engine.
Dec 15, 2010 at 2:33 AM
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JEFFRD390
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Wouldn't I hear knocking as its running if it was that
Dec 15, 2010 at 2:44 AM
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DAVE'S BIG BACKYARD!
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  • 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.
Dec 17, 2010 at 2:10 AM
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MHPAUTOS
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  • ASE Certified Mechanic
Check that the oil filter is a quality unit with an anti drain back valve fitted, replace if not and re check.

mark (mhpautos)
Dec 21, 2010 at 9:29 PM
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