Odd Noise, Need Your Suggestions

[maytag]

Originally Posted by piper6909

It definitely doesn't sound like a rod knock to me. A rod knock has a constant rhythm and is much deeper, hollow sound, not an arrhythmic knock like what I'm hearing in the video.

Given that statement, I'm not sure you've ever HEARD a rod-knock.
Give it a little gas, it'll catch the rhythm.... sometimes.... depends how bad it is... but at idle? Nah.... they ALL sound like that.
And your "deeper hollow" sound might make sense with an iron block.... not an aluminum one.

Like I said: hope im wrong. But all of that fits rod knock.

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[piper6909]

Originally Posted by maytag

Given that statement, I'm not sure you've ever HEARD a rod-knock.
Give it a little gas, it'll catch the rhythm.... sometimes.... depends how bad it is... but at idle? Nah.... they ALL sound like that.
And your "deeper hollow" sound might make sense with an iron block.... not an aluminum one.

Like I said: hope im wrong. But all of that fits rod knock.

Sent from my SM-G970U using Tapatalk

I've owned and serviced many Subarus, I know the sound of a rod knock. Aluminum blocks, boxer engines. I may be new to Porsches, but I've heard many rod knocks.

It could be, but I don't think this sounds like a rod knock.

Also, if it was a rod knock he'd hear it while driving. He said he didn't.

I'm thinking tensioner.

But we'll see if/when he reports back.