Technical 2013 1.3d Doblo 90 (263A2000) Heavy white smoke on idle.

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Technical 2013 1.3d Doblo 90 (263A2000) Heavy white smoke on idle.

P3T3R

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Nov 7, 2022
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I'm trying to get to the bottom of a very smoky 1.3 Multijet 90 engine (White)
Suggests (and smells like) un-burnt fuel causing smoke.

Symptoms:
- Smokes badly on idle, instantly, from stone cold.
- Starts almost instantly when cold.
- Seriously struggles to start when even slightly warm.
- Reverts to heavy smoke when stopped (e.g at the lights)
- Drives ok-ish and smokes far less when off idle.
- Doesn't really seem to boost, but can hear turbo spin up.
- Not in limp mode (revs fine)
- No dash lights or fault codes.
- Doesn't appear to be using oil or water.
- No oil in water or water in oil.
- No unusual breathing from filler/breathers so unlikely to be much blow-by

Tried:
- Swapped all the injectors a for a known good set (and coded) - No change at all.
(ALL injectors appeared a little wet and crusty, so would suggest all cylinders are running very rich, rather than just 1 bad injector)
- Removed, cleaned and tested all glow plugs (OK) - No change to smoke at all but did help cold starting a bit.
- General check of all sensors and connections, no obvious issues.
- Checked/cleaned out MAF, wasnt bad, no change.

I have MultiECUScan (Registered) from my previous Abarths - No errors stored or present.
All sensor feeds seemed OK, no obviously weird readings although it's hard to know what "correct" should be.
(apparent) Good pressure on fuel rail.

So...
Any Ideas?!?!?!



(and no...... it's not "condensation" ! )
 
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P3T3R

New member
Joined
Nov 7, 2022
Messages
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Derby
A possibility that a friends has just mentioned... Possible leak in the induction system after the turbo - Could have the MAF seeing a large amount of incoming air pulled through by the turbo, which is escaping somewhere around the intercooler (?) fueling accordingly, but then resulting in a very rich mixture.

Maybe...
(At work at the mo so can't look)
 
Joined
Apr 27, 2011
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Tell us the story.. did it progressively get like this..??

I think you might be right with the 'fuelled to match air'

Are all the temps and pressures looking sensible?
 
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