3.0R Engine knocking noise

Posts specific to the 3.0 litre NA H6 engine

3.0R Engine knocking noise

Postby ix9 » Wed Sep 24, 2014 7:16 pm

Can anyone help diagnose what might be wrong with this H6 3.0 Engine?

https://www.youtube.com/watch?v=73ND1nkE1U0

I'm no expert - but it doesn't sound good.

Any help appreciated!
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Re: 3.0R Engine knocking noise

Postby WIDELOAD » Fri Sep 26, 2014 8:14 am

Sounds like rod knock to me. Definitely not a good noise. :?
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Re: 3.0R Engine knocking noise

Postby 666 » Fri Sep 26, 2014 10:20 am

WIDELOAD wrote:Sounds like rod knock to me. Definitely not a good noise. :?


I second that diagnosis! Not good at all, take it to a specialist.

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Re: 3.0R Engine knocking noise

Postby Swan_Liberty » Fri Sep 26, 2014 12:08 pm

get it to a specialist asap, drive it gently as well.......
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Re: 3.0R Engine knocking noise

Postby WIDELOAD » Fri Sep 26, 2014 4:17 pm

DO NOT drive it... get it on a tow truck.
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Re: 3.0R Engine knocking noise

Postby vertix » Fri Sep 26, 2014 5:50 pm

Sorry bud, but looks like you're up for an engine rebuild..
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Re: 3.0R Engine knocking noise

Postby Tradewind » Sun Sep 28, 2014 8:59 pm

ix9 wrote:Can anyone help diagnose what might be wrong with this H6 3.0 Engine?

https://www.youtube.com/watch?v=73ND1nkE1U0

I'm no expert - but it doesn't sound good.

Any help appreciated!


What has preceded this knocking event, low oil or ???
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Re: 3.0R Engine knocking noise

Postby BillyCorgi » Mon Sep 29, 2014 8:11 am

To determine if it is Rod Knock disable the spark plug cylinder by cylinder one at a time.
The "knock" sound will mute in the affected cylinder when the cylinder is disabled.
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Re: 3.0R Engine knocking noise

Postby Tradewind » Wed Oct 08, 2014 6:58 am

Any update on the outcome?

Didnt see any reply to my last question lol
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Re: 3.0R Engine knocking noise

Postby ix9 » Thu Oct 09, 2014 4:54 pm

OK update (its not my car and I've been away so hence the delay)

Mate took it to a specialist yesterday - got the diagnosis back today.

Big end bearing said the mechanic. He also says "new engine" is cheaper (is that true?)

Yes, the preceding event was low oil.

Any advice/tips?
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Re: 3.0R Engine knocking noise

Postby Tradewind » Thu Oct 09, 2014 9:45 pm

ix9

The sticky thread is all about this - people forgetting to check the motor oil and also forgetting to service motor oil in H6 engines

viewtopic.php?f=16&t=15646
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Re: 3.0R Engine knocking noise

Postby KiDo_Tuning » Mon Oct 13, 2014 1:32 am

Some 2nd hand engines have been acquired for $1200. Some for $2500
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