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Discussion Starter #1
Hi all im throwing this out here incase someone here has experienced the problem im having with 207 hdi engine.
Last engine was throwing out black smoke the whole time i had it from 85k the smoke didnt make any difference to performance until 125k and it dropped a cylinder was piston or barrel
Got second hand engine 1st 2 weeks no black smoke then week 3 black smoke started again? thought it must be something left on van like air flow censor
I put van to diagnostic centre for a full going over but they couldnt find much

1 2 injectors weep slightly

2 turbo viens may be blocked with hardened carbon

Symptoms aswell as black smoke are....lack of power as if turbo unwilling to perform
Also smoke is at its worst at 50 mph in 4th or 60mph in 5th just cruising at that speed engine also makes wierd noise....welly it and smoke and noise stops
Any ideas would be appreciated
 

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Injector seals WILL NOT cause black smoke injector seals will only cause carbon build up round the injector as it is simply there to seal the combustion chamber

Black smoke is caused by too much fuel going in to the cylinders OR not enough air going in and if left the excess fuel eventually melts pistons as in your first engine.

Lack of correct boost from the turbo is the most likely cause or if you used the same injectors they might be faulty.
 

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Discussion Starter #4
Injectors are different from 1st engine although had to use original pump plus inline rail
Thats what im worried about as was told with 1st engine keep running it until fault shows up....ye it sure did show up cost me what with 1200 hiring van 750 for engine 1200 to get it fitted plus mot, so im not wanting to use it waiting for fault to show or piston failure same as last engine
 

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Discussion Starter #5
What would you advice doing to turbo 406? the centre added 2 bottles to fuel one for turbo other for engine i reckon its gotten worse since then, have ordered a blanking plate for egr see if that helps also
 

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Egr may be affecting it but if the electrical side is faulty blanking wont help

The turbo vanes get stuck and although the actuator appears to move its not actually moving the vanes.

Could also be a sensor sending bad signals to the ecu unfortunately it really needs someone who knows the engine to look at it to be sure remote diagnosis is only ever going to be a best guess

Ask local taxi drivers if they can recommend someone as it is used in 407s etc and people who work on them every day tend to know more than the dealers do.
 

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Discussion Starter #7
Yes the centre said carbon in the vanes may have set hard if it lay in scrap yard for a while thats why he put the bottle of turbo cleaner in fuel in the hope it may flush it
The EGR in 1st engine blew up as in a hole was made so put new one on hoping that would be end of smoke problems but no lol
So my thinking is block this one up before that happens again with this engine
I had a 206 with same engine took it to 200k miles not a problem apart from 2 or 3 rear axels Thanks for advice 406 but got to call it a day with the spending at some point as its spend and still has same problem every time
 
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