Fiat Ducato 2.3 JTD clouds of very light grey smoke when engine is hot (5 Viewers)

[Hutchweb]

Symptoms only when engine fully hot, 9 o'clock on the temp dial.
Driving and acceleration is great.
However when it is hot coming off motorway and stopping at lights, light grey smoke billowing out, then smoking badly with light grey smoke when accelerating away.
Like a switch has been flicked, it will then be very smokey on acceleration.
Stop for 10 seconds and as it pulls away clouds of pale grey smoke which then stops after a few accelerations (it is now getting worse and smoking most of time if it is hot)
So it is like the fuel flow is not switching off.
Engine breathing checked
Injectors checked and one replaced
Valve seals changed
Block pressure checked
2 bottles of turbo cleaner put through the turbo
There does not appear to be an EGR
Engine has only done 53000 miles, 2.3JTD 2004, Fiat Ducato
Van is used regularly, we at a loss where to go with this problem now, anyone any ideas?

 

[jockaneezer]

Is it using any oil or water ?

 

[ALI G]

I had this. If the smoke is smelly it might be the turbo seals as was in my case.Van ran fine until stopped in traffic then when pulling away cloud's of smoke which cleared once driven.
Alan.












An

 

[Figaro]

 

[Landy Andy]

Assume a new fuel filter has been fitted?
Im surprised no EGR fitted.

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[eurajohn]

Assume a new fuel filter has been fitted?
Im surprised no EGR fitted.

2004 van

 

[chatteris]

definately has egr valve on my 2003 2.8jtd

 

[ANDKEZLULA]

Check the air filter and air intake pipes etc, a restriction from collapsed /blocked filter or pipes can do this.

 

[Hutchweb]

It doesn't seem to be getting through oil or water.
My gut feel is that it is turbo related, but I don't understand how the turbo can affect overfuelling. The smoke is very light grey which I believe indicates unburnt diesel.
Could I run it for a test without the air filter in place? Or is that too risky.
Any directions on how I can check if an EGR is fitted?
Many thanks for your interests and suggestions.

 

[Landy Andy]

It doesn't seem to be getting through oil or water.
My gut feel is that it is turbo related, but I don't understand how the turbo can affect overfuelling. The smoke is very light grey which I believe indicates unburnt diesel.
Could I run it for a test without the air filter in place? Or is that too risky.
Any directions on how I can check if an EGR is fitted?
Many thanks for your interests and suggestions.

Yes you can run with af in place but can’t see how that would help. If restrictions are in intake system I would expect black smoke.

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[Landy Andy]

2004 van

Even Defenders of 04 had EGRs fitted.

 

[Figaro]

definately has egr valve on my 2003 2.8jtd

Mine hasn't

They maybe on the 2.3 but I don't think the 2.8 jtd had them fitted

 

[Jake Royd]

It does sound like partial turbo seal failure to me. The turbo has its own oil feed to the bearings. If the seals fail oil can be drawn into the intake and burnt in the cylinder.
Complete seal failure results in a big cloud of white smoke and of course other issues.
Hope this helps.

 

[Hutchweb]

It does sound like partial turbo seal failure to me. The turbo has its own oil feed to the bearings. If the seals fail oil can be drawn into the intake and burnt in the cylinder.
Complete seal failure results in a big cloud of white smoke and of course other issues.
Hope this helps.

One of the garages involved did say they had checked the turbo seals, but I am not sure how they did that as accessing the turbo is a nightmare. I am moving towards replacing the turbo now, we are no longer enjoying using the van so need to get it sorted.

 

[chatteris]

Mine hasn't

They maybe on the 2.3 but I don't think the 2.8 jtd had them fitted

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[Hutchweb]

I will replace the air filter and fuel filter and if that doesn't help I will go down the replacement turbo route.
Thanks for all the suggestions and advice.

 

[Boringfrog]

2004 2.8jtd, no EGR valve on mine.

 

[Lofty1]

Sounds more likely that you have a injector problem and one or more are over fuelling had the same on mine,not easy to remove as bolts can shear have it tested before doing anything as they are expensive

 

[ALI G]

I agree it took several trips to different garages to diagnose my problem and not a cheap fix, turned out to be too much end float on the turbo no loss of oil just smoke after idling when hot.If over fuelling wouldn't it be running rough and lumpy? but I am no expert.
Good luck

 

[Figaro]

2004 2.8jtd, no EGR valve on mine.

Curious isn't it.
I was sure I didn't have an EGR on my 2003 2.8 JTD, but they seem to make the part so maybe it was fitted to some and not others ?
I thought it came as part of the DPF setup on later models when emmissions legislation was introduced

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[Boringfrog]

Curious isn't it.
I was sure I didn't have an EGR on my 2003 2.8 JTD, but they seem to make the part so maybe it was fitted to some and not others ?
I thought it came as part of the DPF setup on later models when emmissions legislation was introduced

No Cat on mine either.

 

[Burgo]

White smoke - steam from water.
Blue smoke - oil.
Black smoke - soot.

 

[Hutchweb]

Sounds more likely that you have a injector problem and one or more are over fuelling had the same on mine,not easy to remove as bolts can shear have it tested before doing anything as they are expensive

The Injectors have been removed and checked and one was replaced. We then moved onto the valve seals and replaced them. Then compression test and some sort of turbo oil leak check, which I am suspicious about whether that happened!

 

[Landy Andy]

In my experience a turbo issue will be blue smoke, and you also need a LOT of wear in the turbo for it to occur.

 

[Klincy]

Hi there!
I was reading about this issue, the same thing is happening to me. Did you maybe resolve your issue?

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[Andrew greenwell]

Did you get sorted I have same problem

 

[PeterCarole29]

It doesn't seem to be getting through oil or water.
My gut feel is that it is turbo related, but I don't understand how the turbo can affect overfuelling. The smoke is very light grey which I believe indicates unburnt diesel.
Could I run it for a test without the air filter in place? Or is that too risky.
Any directions on how I can check if an EGR is fitted?
Many thanks for your interests and suggestions.

Grey /Blue smoke is oil black smoke is diesel I always thought