BIG END BEARING GONE

  • Thread starter Thread starter Anonymous
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Anonymous

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in my xf when im driving i can hear this knocking sound. if i back of the throttle it goes away but as soon as i touch it again it comes back. it does it in every gear, the lower the gear the worst it is. i think its the big end bearing, could it be something else causing it?
 
How loud is the noise? Louder than a sticky or collapsed lifter?
What's the oil presure like? Low oil pressure is usually a fairly good indication of a bottom end problem.
 
yeah its louder than a sticky lifter coz i got a sticker lifter aswell.
 
could an exhaust leak be causing it coz i think i got an exhaust leak.
 
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