C5 HDI smoking..Help needed desperately

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Jackyboy44
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C5 HDI smoking..Help needed desperately

Post by Jackyboy44 »

I posted on here recently the problem with my C5 2.2hdi. When starting from cold I get lots of whiteish smoke and a bit of misfire but within 10 seconds or so it clears and runs perfectly. Took it to my garage, diagnosed No 4 injector faulty and it was replaced. Car ran fine, next morning still the smoke. Back to the garage, had another 2 injectors replaced but it is exactly the same.

The car has no other problems and I really need to sort this out.

Please anyone...........give me your ideas
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myglaren
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Re: C5 HDI smoking..Help needed desperately

Post by myglaren »

Have you had a diagnostic run on your car?

It can eliminate much of the guesswork involved in fault finding ad a lot of expense in fitting new parts that turn out not to be needed.

There are a number of our members who offer to run a Lexia diagnostic.
Details to be arranged between you and the Lexia owner.

There is a list of Lexia owners willing to do this here and a link to a map showing their locations is included in the first post.

Otherwise I'd suggest a diesel specialist.
There are a number of things that could be responsible but my best guess is overfueling or an imbalance between the air and fuel delivery. Same thing really.
Jackyboy44
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Re: C5 HDI smoking..Help needed desperately

Post by Jackyboy44 »

The garage I go to has done the usual fault code thing which showed injectors. It now does not give any faiults. Is a diagnostics test different to what I have had done?

Several months ago I had the DPF removed and software updated accordingly and the car has been running beautifully. Then one morning I start it up and all the smoke appears.
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myglaren
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Ooops.
Previously:
2009 Honda Civic :(
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R4, R11TXE, R14, R30TX
x 4888

Re: C5 HDI smoking..Help needed desperately

Post by myglaren »

Depends on the diagnostic tool they use and how adept they are at interpreting the results.
Lexia is Citroen specific and will worm out a lot more information than a generic code reader. Particularly if used to collect live data rather than just stored faults.
White smoke indicates unburned fuel so there could still be a problem with the injectors.
Equally, the remap to facilitate the removal of the DPF may have failed somehow and be overfueling.
WAG on that one though.
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