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Is this piston slap/rod knock ? Turbo EJ20 engine 2008

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Old 13 April 2021, 09:17 PM
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MB84
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Default Is this piston slap/rod knock ? Turbo EJ20 engine 2008

Tried to capure the sound from inside and outside ..... any advice? Outside the car form 50 sec onwards....


Inside the car it seems to be coming from the glove compartment side...

Last edited by MB84; 13 April 2021 at 09:20 PM.
Old 13 April 2021, 09:21 PM
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1509joe
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Check your plugs are tight and look for exhaust leaks. Doesn't sound like rod knock to me.
Old 14 April 2021, 08:03 AM
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I had a fairly similar noise on my jdm hatch, and as Joe says, it was a loose plug.
Old 14 April 2021, 09:52 PM
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MB84
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I'll check the plugs this weekend..Thanks!
Old 17 April 2021, 11:56 AM
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Henrik
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Might be my phone, but to me it sounds like the injectors? Both my subarus have made a similar noise (maybe not quite as loud, but then it might just be the phone I’m listening on)
Old 17 April 2021, 03:20 PM
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Smithys STI
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Sounds like the fuel dampers pulsating to me,located on the fuel lines near the N/S/F suspension turret.
Old 17 April 2021, 05:38 PM
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MB84
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I checked the plugs they are tight, it sounds different on the phone than in real life though a lot worse on the phone I'll take it in for a check....
Old 18 April 2021, 08:46 PM
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Croney
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Mine sounds similar, iv been told my forged pistons are slapping a bit, it stops if you raise the runs a little
Old 02 May 2021, 03:42 PM
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MB84
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Update: had a full health check done by Rich at FB Tuning car is absolutely fine (it sounds different in the recording than in real life...) so that's that then..It's my first Suaru so just not used to the boxer noise I guess..

Last edited by MB84; 02 May 2021 at 03:47 PM.
Old 02 May 2021, 09:34 PM
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hedgecutter
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Excellent. Rich is well renowned!
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