Brera 3.2 v6 q4. Blue smoke from engine bay - Alfa Romeo Forum
You are currently unregistered, register for more features.    
 1Likes
  • 1 Post By A_Venables
 
Thread Tools Search this Thread
(Post Link) post #1 of 14 Old 18-05-16 Thread Starter
Status: -
AO Member
 
Join Date: Dec 2007
Location: United Kingdom
County: Derbyshire
Images: 15
Garage
Brera 3.2 v6 q4. Blue smoke from engine bay

Hi everyone.

Its been a long time since my last post, mainly due to my GT getting written off and wedding plans meaning I needed a cheap run around for a while.

But i'm pleased to once again be a proud owner of another Alfa. This time a stunning Red Brera. But she seems to have picked up an aweful smoking habbit.

I think i've tracked the source of the smoke to a rubber hose thats drippibg fluid onto the exhause manifold at the back of the engine. Seems to be seeping out from under a jubalee clip, and running down the pipe until it drips off, burning off on the hot exhaust.

I've tightened the clip a little, but yet to see if that's solved it.

My question though, does anyone know what this pipe is a whats carried within?
The liquid seeping out seems oily, but is apparently clear and i think its quite thin.

Heres a few pics of the hose, hopfully showing where its located too (just left of and below the water expansion tank)
Attached Images
File Type: jpg 20160518_174026_1463591928701.jpg (31.2 KB, 46 views)
File Type: jpg 20160518_174004_1463591969681.jpg (41.8 KB, 49 views)
File Type: jpg 20160518_174017_1463592010603.jpg (66.0 KB, 44 views)
Mr Flibble is offline  
Sponsored Links
Advertisement
 
(Post Link) post #2 of 14 Old 18-05-16 Thread Starter
Status: -
AO Member
 
Join Date: Dec 2007
Location: United Kingdom
County: Derbyshire
Images: 15
Garage
Here's another pic pointing out the clip which was seeping.
The pipe in question changes to a metal pipe behind the engine block and runs parallel to it. The rubber end apears to run into the bulkhead
http://uploads.tapatalk-cdn.com/2016...6e612c918d.jpg
Mr Flibble is offline  
(Post Link) post #3 of 14 Old 19-05-16 Thread Starter
Status: -
AO Member
 
Join Date: Dec 2007
Location: United Kingdom
County: Derbyshire
Images: 15
Garage
It looks like the jubilee clip i've tightened (pictures in above post) hasnt solved the problem. So its either still seeping through or theres a split in the pipe around that point.

Is anyone able to tell me what pipe it is? Or even what fluid it carries?

The garage I bought the car from is a long distance away, so if u can find this out they'll tell me if they will need to collect the car to fix it, or if they'll pay for me to take it to a local garage.

Any suggestions welcome!

Sent from my SM-G925F using Tapatalk
Mr Flibble is offline  
 
(Post Link) post #4 of 14 Old 19-05-16 Thread Starter
Status: -
AO Member
 
Join Date: Dec 2007
Location: United Kingdom
County: Derbyshire
Images: 15
Garage
Quote:
Originally Posted by Mr Flibble View Post
It looks like the jubilee clip i've tightened (pictured in above post) hasn't solved the problem. So it's either still seeping through or theres a split in the pipe around that point.

Is anyone able to tell me what pipe it is? Or even what fluid it carries?

The garage I bought the car from is a long distance away, so if I can find this out they'll tell me if they'll need to collect the car to fix it, or if they'll pay for me to take it to a local garage.

Any suggestions welcome!

Sent from my SM-G925F using Tapatalk

Quote:
Originally Posted by Mr Flibble View Post
Hi everyone.

Its been a long time since my last post, mainly due to my GT getting written off and wedding plans meaning I needed a cheap run around for a while.

But i'm pleased to once again be a proud owner of another Alfa. This time a stunning Red Brera. But she seems to have picked up an aweful smoking habbit.

I think i've tracked the source of the smoke to a rubber hose thats drippibg fluid onto the exhause manifold at the back of the engine. Seems to be seeping out from under a jubalee clip, and running down the pipe until it drips off, burning off on the hot exhaust.

I've tightened the clip a little, but yet to see if that's solved it.

My question though, does anyone know what this pipe is a whats carried within?
The liquid seeping out seems oily, but is apparently clear and i think its quite thin.

Heres a few pics of the hose, hopfully showing where its located too (just left of and below the water expansion tank)

Sent from my SM-G925F using Tapatalk
Mr Flibble is offline  
Status: -
AO Member
 
Ruiner's Avatar
 
Join Date: Aug 2010
Location: United Kingdom
County: Warwickshire
Images: 12
Garage
Hi, I am not sure, but mine was the coolant pipe that split - the smoke was on the top right hand side of the engine bay in my case and then the pipe split and drained the coolant on to the road Best to get it checked so you're not left parked
Ruiner is offline  
(Post Link) post #6 of 14 Old 19-05-16 Thread Starter
Status: -
AO Member
 
Join Date: Dec 2007
Location: United Kingdom
County: Derbyshire
Images: 15
Garage
Thanks for this.

Did you have Blue smoke?
I would have thought coolent would white white smoke/steam.

In my case it doesn't look/feel like coolent as it feels oily to the touch.




Sent from my SM-G925F using Tapatalk
Mr Flibble is offline  
(Post Link) post #7 of 14 Old 19-05-16 Thread Starter
Status: -
AO Member
 
Join Date: Dec 2007
Location: United Kingdom
County: Derbyshire
Images: 15
Garage
Dropped the car with an Alfa specialist after the garage I bought it from agreed to pay the diagnostic fees.

Mechanic had a quick look as I dropped it off and thinks it is antifreeze (tasted sweet).
So looks like this is a pipe which goes into(or out of) the heater matix.

Hopefully they can confirm it's just that after performing a full diagnostic check.

So Ruiner, you may well have been right. Thank you.

Sent from my SM-G925F using Tapatalk
Mr Flibble is offline  
Status: New quiet lifters
AO Silver Member
 
halftone's Avatar
 
Join Date: Feb 2012
Location: United Kingdom
County: Greater London
Garage
I don't want to alarm you but please do make sure it isn't hydraulic (brake/clutch) fluid, which looks oily and tastes sweet (but is very poisonous so don't taste it). It is also highly flammable and can ignite on a hot exhaust manifold, unlike oil or petrol, and is the major cause of engine fires.

Coolant nowadays (since 2002 IIRC) should have Bitrex in it to deter kids and pets from drinking it, and it no longer tastes sweet.

I don't know the V6 engine bay but the brake fluid reservoir is nearby and there will be pipes feeding fluid to the brake and clutch master cylinders inside the passenger compartment, so it's worth checking. Also check the level in the reservoir to make sure it isn't dropping. If it is brake fluid don't run the engine until fixed.
halftone is offline  
(Post Link) post #9 of 14 Old 20-05-16 Thread Starter
Status: -
AO Member
 
Join Date: Dec 2007
Location: United Kingdom
County: Derbyshire
Images: 15
Garage
Thanks for the advice halftone.
The brake/clutch reservoir is on the opposite side of the water expansion tank. The pipe which appears to be leaking is the heater matrix pipe. I've found the part number and confirm it via a picture also.
Although that is leaking a little, I'm not 100% convinced that's the root cause of the blue smoke, as I'd expect coolent to give white smoke/steam when burning off. So I hope there isn't a second issue causing the blue smoke!

Hopefully I'll hear back from the garage today with a confirmed diagnosis.


Interestingly, I read a report yesterday of the flamable properties of all liquids found within an engine bay, suprisingly under the right conditions all fluids (with a possible exception of screenwash which wasn't tested) are flamable when coming into contact with a simulated hot exhaust.

I'll see if I can find the link.

Thanks again

Sent from my SM-G925F using Tapatalk
Mr Flibble is offline  
(Post Link) post #10 of 14 Old 25-05-16 Thread Starter
Status: -
AO Member
 
Join Date: Dec 2007
Location: United Kingdom
County: Derbyshire
Images: 15
Garage
Just a quick update.

The fault was indeed traced to the heater matrix pipe, the jubalee clip had been way overtightened at some point crushing the plastic pipe the rubber hose is clamped to.
All replaced for 205.
Garage sent me a picture of the broken pipe: http://uploads.tapatalk-cdn.com/2016...ec5e60562f.jpg

She looking good back where she belongs
http://uploads.tapatalk-cdn.com/2016...e2d80a9d20.jpg

Sent from my SM-G925F using Tapatalk
Mr Flibble is offline  
Status: -
Newbie
 
Join Date: Jul 2016
Location: Stockholm
County: -Sweden
Garage
This thread was quite helpful, i had the exact same problem on my 159 3.2 q4. Even the crack pattern on the bend looked the same as in the pictures you posted. Seems really dumb that they did not support that part better or made it out of aluminium.
AntonW is offline  
Status: Let the V6 howl!
AO Member
 
A_Venables's Avatar
 
Join Date: Sep 2008
Location: United Kingdom
County: West Midlands
Garage
Same with mine, replaced a few weekends ago with 43K on the clock, again thanks to the thread, it was a help. Shame there isn't a better alternative than the poor original item.
A_Venables is offline  
(Post Link) post #13 of 14 Old 29-07-16 Thread Starter
Status: -
AO Member
 
Join Date: Dec 2007
Location: United Kingdom
County: Derbyshire
Images: 15
Garage
Sorry to hear you guys having the same problem, but happy at least this thread has been of assistance to you.

I wonder how many others have had the same problem over the years, as it sounds like a case of an inferior part!
Mr Flibble is offline  
Status: Let the V6 howl!
AO Member
 
A_Venables's Avatar
 
Join Date: Sep 2008
Location: United Kingdom
County: West Midlands
Garage
Quote:
Originally Posted by Mr Flibble View Post
Sorry to hear you guys having the same problem, but happy at least this thread has been of assistance to you.

I wonder how many others have had the same problem over the years, as it sounds like a case of an inferior part!
It is, it no wonder this part goes, Ive had a Calibra and a Corsa years ago that blew hoses in exactly the same place (just off the block going to the heater matrix), must be the hottest part of the engine, coolant hose wise. But why do this in plastic! It was bad enough in braided rubber hose for this! I do expect this to be a serviceable item going forward (replace every 7-8 years)
Mr Flibble likes this.
A_Venables is offline  
Reply

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Alfa 159, Brera & 946 Spider

Tags
bay , blue , brera , engine , smoke

Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome