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Discussion Starter #1
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)
 

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Discussion Starter #2
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
 

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Discussion Starter #3
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!

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Discussion Starter #4
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

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
 

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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 :depressed: Best to get it checked so you're not left parked :biglaugh:
 

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Discussion Starter #6
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.




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Discussion Starter #7
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.

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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.
 

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Discussion Starter #9
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

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Discussion Starter #10
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:


She looking good back where she belongs


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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.
 

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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.
 

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Discussion Starter #13
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!
 

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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):irked:
 
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