Black smoke from exhaust - help please

Four of us

Four of us

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Feb 26, 2013
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derbyshire
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Autocruise stargazer
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since 2013
Our 2007 Autocruise is belching black smoke from the exhaust when it start up and also when going up hills. We have tried some diesel additive before which seemed to improve matters for a short while. It has about 50k miles on the clock. Any suggestions please?
 
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Black smoke from a Diesel engine, is usually a sign of unburnt fuel.

When was the air filter and fuel filter changed?

That would be my first course of action and replace them and see how it goes.
 
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After changing the filters and using injector cleaner I would give it an Italian service. Hold it in third gear say making it work up a hill and hold the revs above 3000rpm as long as you can. That will blow all the crap through the system.
Good luck. 👍
 
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Give it a good blast up the motorway, not at 50 give it the max.
With our old tractors we love the black smoke, not blue or white mind.
No smoke, no poke ;) :giggle:
 
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Start cheapest option first, check hoses to the intake manifold from turbo if fitted for leaks, usually a slight whistling sound but different from the turbo itself. Good house keeping change fuel filter, temp remove air filter drive van to see if smoke stops, fit new air filter. Given the mileage you would be unlucky if the turbo is faulty, any of the high pressure systems is best left to a specialist
 
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Could be airflow meter not reporting correctly leading to ecu overfueling thus black smoke.
I,ve had same symptoms on a citroen common rail engine. First, cheap, replacement was just as bad. Second dearer replacement cured it.
But there were also other symptoms , engine hesitates when pulling away, poor cold performance,eg hill start when cold.
 
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After many many years in the motor trade my advise would be... Filters, then a good thrash followed by 60mph for at least 10 miles (if fitted with a regen device) then if still playing up find a local diagnostic guy who should charge no mare than £50, never use supermarket fuel!!
 
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Coming up to a total of 213000 miles between the last 5 vans probably used supermarket fuel for most of the time both in the UK and Europe. Always looking for the cheapest. Never had a problem

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Supermarket fuel is usually not that much different from normal garage fuel. Its how they look after their tanks that makes the difference, and this doesn't mean that supermarkets are lax as there are many standard filling stations that haven't changed their tanks for many years
 
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I can only go from experience of stripping engine's and injection systems and finding fuel glue to back my own preferred methods. Each to their own 👍
 
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Get it onto a diagnostic computer, thats where your definitive answer will be & for future reference, treat yourself to a decent OBD2 reader, preferably something like an iCarsoft machine, they're worth their weight in gold.

For my money, you've got a split intercooler hose, or it has possibly delaminated on the inside, nice cheap fix.
 
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fat haggis said:
Replace all filters then A Spanish tuneup.
Click to expand...
What’s the difference between a Spanish tune up and an Italian tune up ?

I don’t know,what is the difference between a Spanish tune up and an Italian tune up?

You go backwards on the Italian one. Boom boom. :ROFLMAO: :roflmto:

Or? What’s your punch line ?

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Badknee said:
After changing the filters and using injector cleaner I would give it an Italian service. Hold it in third gear say making it work up a hill and hold the revs above 3000rpm as long as you can. That will blow all the crap through the system.
Good luck. 👍
Click to expand...
A mate of mine drives slowly and the vehicle was doing similar to what the OP mentioned. I managed to my hands on my mates vehicle and whilst he was not happy that I did what you outlined giving it lots of welly in 3rd the vehicle hesitated slowed slightly blew out a huge amount of smoke which i assume was just build up my mate cried out ‘you’ve broken it’ only to realise the vehicle was actually smoother quicker and not pushing out smoke. So your suggestion does work if the build up is the cause.
 
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We used to have a van on a Peugeot, and every so often if you pushed it , it would push out a cloud of black smoke but would then be fine for another couple of hundred miles, disconcerting the first time I saw it in my mirror, but never thought about it again.
 
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Podney said:
What’s the difference between a Spanish tune up and an Italian tune up ?

I don’t know,what is the difference between a Spanish tune up and an Italian tune up?

You go backwards on the Italian one. Boom boom. :ROFLMAO: :roflmto:

Or? What’s your punch line ?
Click to expand...
They all look the same to me 👀👀🚬😷💨😃
 
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All diesel is to EN590, regardless of forecourt or supermarket fuel, black smoke is unburnt fuel, blue smoke is burnt oil and white smoke is burnt coolant, EN590 diesel contains 5% bio diesel, so a clean burn is essential, check all turbo pipes and intercooler, if all OK then go to a decent dealer
 
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Last week I drove our 2.8jtd towing our car over the Sierra Nevada’s so it got a real good clean out but never over 3500 rpm.

188D9EBB-DA7B-46EC-BC5F-BDCE69F13C48.jpeg
 
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HappyWonderes said:
After many many years in the motor trade my advise would be... Filters, then a good thrash followed by 60mph for at least 10 miles (if fitted with a regen device) then if still playing up find a local diagnostic guy who should charge no mare than £50, never use supermarkets fuel!!
Click to expand...
why not? It meets and exceeds exactly the same standards as branded fuel and is often out of the same tanks. It is a total myth that normal supermarket fuel is sub standard. It is not. I have been in the fuel quality and testing business for 35 years, by the way
 
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I used to be on oil tankers. We never knew who we were delivering to until in British waters Esso Shell or joe bloggs the difference is the additives or lack of, that is the only difference. Crude oil is just that
 
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