Loud engine knock could this be the EGR valve or the PCV valve causing the knock?

Tiny
RIBBO
  • 1996 ISUZU TROOPER
  • 180,000 MILES

Knocking all the time on start up

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Tuesday, April 24th, 2012 AT 5:20 AM

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Tiny
FIXITMR
  • MEMBER

You mean it runs rough or just makes knocking noise? I bad miss can make a knocking sound or some part internally has failed. Hard to judge on net. Does it knock worse when driven?

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Tuesday, April 24th, 2012 AT 5:45 AM

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