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'98-2.5L & '05-3.0L Subaru Outback Wagons
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142 Posts
Discussion Starter · #1 ·
Seen several postings about burning smell or smoke from the engine area.
My Gen 3 and Gen 2 H6 engines had the front inner axle boots directly over the
catalytic convertors. When the boot splits open (due to aging) their grease flips
directly on the them. Those get super hot and smoke and burning smell is strong.
Seems like a poor design choice to place a flexible bellow over a super-hot component.

Trig
 

Master Caster
馃枻馃挃馃挋 3 Beautiful OBXTs
Joined
16,228 Posts
The H4 and H6 platforms have some challenges when it comes to certain things.

It's awful hard to get axles and exhaust to play nice with a horizontal motor. Add an engine subframe and a wheel well and it gets even worse. Many would say that spark plugs and valve covers right up against a unibody frame rail is a poor design choice. One might also say a intercooler mounted on the top of a heat generating motor is a poor design choice.

They all are simply functions of what we call a Subaru.
 

Meh.
I has wagons.
Joined
12,346 Posts
...and?
 

Premium Member
2008 JDM Outback 3.0R, 5EAT
Joined
487 Posts
Just had the same issue and aroma on 07 outback noticeable walking by the car after parking. Looked underneath and found green grease splattered around from a bad boot. 10 days after replacing the cv boot the reek has receded!
 

Registered
1999 30th Anniversary Legacy Outback DOHC 2.5L 4EAT, 2008 Impreza WRX 2.5L 5MT, 2008 Impreza Wagon 2.5L 4EAT
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1,224 Posts
There's no smell quiet like Subaru CV grease on a hot exhaust!
 

Registered
'98-2.5L & '05-3.0L Subaru Outback Wagons
Joined
142 Posts
Discussion Starter · #6 ·
Aaahhhh, the smell of CVJ grease sizzling on the exhaust system.
Takes weeks to get rid of. No matter how it's cleaned off, grease
remains somewhere and has to burn off. It's what makes a Subaru
a Subaru. BTW , owned 5 of them. 3 currently.

Trig
 

Registered
2005 OBXT Ltd Obsidian Black 5MT
Joined
1,080 Posts
Yep, just rebooted the driver's side on mine. Just about three years after the passenger side went. I'm just under 140k miles.

Fairly easy fix, especially since I had just done all the suspension work, so all the bolts had been broken free recently. But upon reinspection this past weekend, I found that I had not tightened the cup seal band tight enough and it was leaking grease. A quick rebanding and making sure it was tight solved it. But that also meant cleaning more grease off of things.
 
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