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3.0 engine rattle
Posted:
Tue Jan 08, 2013 7:57 pm
by b120ute
i have a 3.0 my08 wagon with 87,000km on it and it has an annoying rattle coming from what sounds like the front of the engine which can only be heard
on idle when standing outside the car.
ive just replaced the bearings in both idler and tensioner pulleys as i thought they were the culprit but the noise is still there.
ive noticed that is doesnt rattle on cold start up but once warm its pretty noisy, although im unsure if its the fact that its cold that its not rattling
or because of the extra engine rpm on cold start.
im the second owner (bought it a month ago) and it has always been dealer serviced since new
any help/thoughts appreciated
Re: 3.0 engine rattle
Posted:
Sun Jan 13, 2013 7:39 pm
by dock
Timing chain - mine does it too. My mechanic reckons it is nothing to worry about. But he could be wrong.
Re: 3.0 engine rattle
Posted:
Tue Jan 15, 2013 3:22 pm
by b120ute
really? if its the timing chain i'd definately be worried about why its so noisy
anyone else have any experience with this?
Re: 3.0 engine rattle
Posted:
Mon Jan 21, 2013 10:18 am
by B8ZE
I have the same issue except mine is noticeable accelerating hard when the car is about to change gears. I think one of the chain tensioners might be on the way out or gone already. Seems to be a fairly common on H6 Outbacks Google tells me.
Re: 3.0 engine rattle
Posted:
Mon Jan 21, 2013 12:16 pm
by Statts
I get a quick rattle when punching the accelerator hard, or when throttling back on hard after a gear change. Sounds like pinging but stops quickly, Learning View shows no knocking.
Re: 3.0 engine rattle
Posted:
Mon Jan 21, 2013 1:36 pm
by BATMAN87
i get the same rattle too, when I step on it, sounds like there is a small piece in the exhaust pipe smacking around, could it be a piece broken off the 1st cat, and now trapped between the 3rd cat?
Re: 3.0 engine rattle
Posted:
Sat Feb 02, 2013 10:38 am
by cooki_monsta
It's most likely the exhaust heat shield. I've tried to remove some of the rusted bolts and failed, but in trying to do so, I've slightly bent the heat shields and it has reduced the vibration. I'm going to try and remove it completely today.
Re: 3.0 engine rattle
Posted:
Mon Feb 04, 2013 8:16 am
by jay.ritchie
dock wrote:Timing chain - mine does it too. My mechanic reckons it is nothing to worry about. But he could be wrong.
Same here.
I haven't asked anyone about it but its going in for a service soon so ill get subaru to look at it.
Re: 3.0 engine rattle
Posted:
Mon Feb 04, 2013 6:47 pm
by b120ute
report back and let us know how it goes, i suspect timing chain on mine too
Re: 3.0 engine rattle
Posted:
Tue Feb 05, 2013 10:02 pm
by jay.ritchie
b120ute wrote:report back and let us know how it goes, i suspect timing chain on mine too
I have a post asking about this too. Heres a video:
http://www.youtube.com/watch?v=ljDu20Ci ... e=youtu.beDoes yours sound like this??
Re: 3.0 engine rattle
Posted:
Tue Feb 05, 2013 10:28 pm
by cooki_monsta
That's definitely not a heat shield. Good luck.
Re: 3.0 engine rattle
Posted:
Wed Feb 06, 2013 9:42 am
by jay.ritchie
Subaru Melbourne said to book it in for a diagnosis for $80
Re: 3.0 engine rattle
Posted:
Wed Feb 06, 2013 7:58 pm
by b120ute
no mine doesnt sound like that at all
yours seems to be a consistent sound
mine is more a rattle that doesnt match the rhythm of the engine, if that makes sense
Re: 3.0 engine rattle
Posted:
Fri Feb 08, 2013 3:42 pm
by B8ZE
Nope...mine sounds more like when you change gears on a mountain bike or the sound you get pulling a chain on a roller door but obviously not as loud.
It's gotten worse the last few days no performance loss just annoying
Re: 3.0 engine rattle
Posted:
Tue Feb 12, 2013 7:41 pm
by jay.ritchie
I got a mechanic to look at it while my discs were being machined, he said its coming from inside the timing chain cover, so they'll need to take that off to have a better look. He said its nothing to "worry" about, just to get it checked out relatively soon just to be safe.