[Photodave]

when mine got like that I discovered the upper hose was split on its underside - it's not uncommon tbh.

For some reason my lower has never split, but does like to wear a coating of oil

EGR valve can cause it but usually comes with power loss.

i'd check all the intake system hoses for splits or leaky joins for starters. One thing at a time an' all that!

 

[j300sjl]

In fact i've just fueled up and added Millers Econmax Diesel stuff (which I was meaning to try) and even though i've only driven 4 miles - no smoke!! cant be that successfull surely? it even says it takes 200 miles to take effect.

Anyway 70 mile drive home after work - so i will see for sure then maybe...........

 

[Photodave]

Crikey that'd be the quickest fix ever!

Let it cruise a bit then give it some, see what happens.....

Sometimes if they've not had much right foot action a bit of "hammer" creates all manner of smokescreen then it's fine for a while again (italian tune-up!)

edit: just a thought but how old's the air filter?

 

[j300sjl]

Service was done 6 months ago (about 7k miles) and air filter was changed (well it was on the bill !) lol

Have a K&N waiting - so im going to get them to bung that in when they check the upper and lower hoses.

More air flow has to be a good thing on a diesel

 

[j300sjl]

I've been trying the Italian tune up - and within a few miles the smoke returns.

So like i say see how the drive home later is.............

 

[Guest]

Hoses first thing to check...

 

[Photodave]

yeah my money (if i was a betting man, which I'm not) would be upper hose like I first mentioned. But no guarantees of course!

Hours of fun making a samco one fit..... :rant: :lol:

 

[Guest]

It will be the upper pipe, small split as it dips over the battery.

Mine dropped so much smog behind me, it was a joke. I had a friend to drive behind me, even pulling off the smog was stupid.

I booted it and it dropped a black / grey cloud that vanished the road.

 

[Guest]

yeah my money (if i was a betting man, which I'm not) would be upper hose like I first mentioned. But no guarantees of course!

Hours of fun making a samco one fit..... :rant: :lol:

The Samco hose will fit easily into the top, no a problem, it is the lower intercooler hose that is a fiddle, I understand that you have to snip a little off the end of the samco hose for it to fit well.

But as Ive mentioned in a thread I posted a few days ago, the Samco hoses are much better than the ugly, cheap & heavy OEM hoses, they are a tad narrower so I think they act as a venturi to squeeze a little more pressure through. Throttle response feels tad better too. Looks great in red BTW :thumbs:

 

[j300sjl]

It will be the upper pipe, small split as it dips over the battery.

Mine dropped so much smog behind me, it was a joke. I had a friend to drive behind me, even pulling off the smog was stupid.

I booted it and it dropped a black / grey cloud that vanished the road.

LOL ! I know that feeling

 

[j300sjl]

The Samco hose will fit easily into the top, no a problem, it is the lower intercooler hose that is a fiddle, I understand that you have to snip a little off the end of the samco hose for it to fit well.

But as Ive mentioned in a thread I posted a few days ago, the Samco hoses are much better than the ugly, cheap & heavy OEM hoses, they are a tad narrower so I think they act as a venturi to squeeze a little more pressure through. Throttle response feels tad better too. Looks great in red BTW :thumbs:

Where do we get those from buddy?

 

[Guest]

Give me 2 seconds and I shall get you the link

 

[Guest]

Here you go, take a look around too, really is a good site for information and advice.

Alfa Romeo 156 Samco Hoses

Parts you shall need.

50508080BK

51709470 (as the site says, you will need to snip a tad off)

I shall copy a thread I put up the other day, you can see a picture of mine with the red hose installed.

Plenty more info in there about servicing too, well worth a read :thumbs:

 

[Guest]

The servicing info is good. Better filters, oil etc etc believe me, it was worth the thread. Like everthing here

http://www.alfaowner.com/Forum/alfa...-an-exciting-week-and-its-only-wednesday.html

I do believe your 2.4 utilises the same filters etc :thumbs:

 

[j300sjl]

Thats great thanks mate - shame 2.4 is black only

 

[Photodave]

er no, the samco hose does NOT easily fit on the top - unless they've started making a 2.4 MJET 20v specific one?

I got mine from Veloces who said "yeah we just have to trim a little off one end to fit the 20v" and it couldn't have been further from the truth!

I still got it on in the end though

 

[Guest]

Oh, the space between connection and batt etc looked the same. My mistake.

Unless of course it has been tweaked

 

[Photodave]

No worries - it looked easy enough when i received it tbh

I ended up phoning Veloces who said "yeah we do need to trim them a bit for the 20v but we HAVE fitted them". Can't remember which end they said but i did what I was advised....

...I had to modify the ECU bracket and cut away a bit of metal in front of the strut turret to get it routed as WELL as trimming one end! Even now its a bit squashed in places but works very well (a Merc 320CDi driver found that out the hard way ). Maybe i'll revisit it at some point to see if i can improve the routing any.

Note that alfaworkshop list it for 1.9 mjet and 2.4 JTD (ie not the mjet)....

Same part number from Veloce's via their ebay listings.

unless they sent me the wrong one? But it looked the same as the pic.

 

[Guest]

Go to veloce they sell a hose that fits 16v but with small trim at intake manifold end fit's 20v too.

It's intake manifold end you trim as path is identical from intercooler and round battery it's just 20v engine is wider so intake is closer to pass wing so needs the extra trimmed for perfect fit.

Best to push fit on intercooler then rest on intake at top move towards or away from wing till happy with path ie not touching things it shouldn't, mark hose, then fit intake manifold bit, tighten jubilee's and your done.

Alternative sit on top of old hose when you take off car and trim at intake end to make it same size as old hose