HELP! Knocking sound from engine when cold start.
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This is a discussion on HELP! Knocking sound from engine when cold start. within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; I have a 2008 wrx bone stock. Recently i been hearing this faint knocking sound coming from the engine. The ...

  1. #1
    Registered User theMan's Avatar
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    HELP! Knocking sound from engine when cold start.

    I have a 2008 wrx bone stock. Recently i been hearing this faint knocking sound coming from the engine. The car has 38k on it. Anybody out there having the same issue? What do guys think it is?

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  3. #2
    He simply abides. SD_GR's Avatar
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    Does it go away? If so probably piston slap. You're under warranty, have them look at it and document your concern.
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    Registered User theMan's Avatar
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    Will do

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