I have a 1995 Citroen Synergie 1.9TD, it's due an MoT and I know it's going to fail the 'smoke test' due to the amount of black smoke it pukes out when revved hard and the vehicle is staionary. The car has been treated with injector cleaner quite regulary, it doesn't burn any oil and fuel economy is good.
The car has always seemed a bit gutless, and there is a noise from the turbo that sounds as if someone's left a window a bit open - the noise isn't too loud, but you can just hear it.
Taking all this into consideration, a local garage has diagnosed the black smoke problem as turbo failure, while another has said it's more likely to be a blockage somewhere causing back pressure (hence the noise from the turbo).
Any ideas ?
Thanks in advance,
Eddie.
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Eddie,
Turbo's are very reliable on these vehicles so I would not be looking at that as a likely failure. Plus black smoke is more usually due to an air inlet restriction or injection faults (pump/timing/injectors).
The slight whine is quite usual to a greater or lesser degree. If very bad it can be a simple air leak.
This is a very large body for the old 1.9TD engine so they are all a little slow, even in A1 condition.
Sounds like you need to go to a diesel or Citroen specialist.
M.M
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Try an 'Italian Tune up' prior to presenting it for the smoke test. Try to ensure that they do the smoke test as soon as you arrive with the car - i.e engine at notmal operting temperature after a run. Make sure that the cambelt has been changed at the correct intervals too. I would try this before spending on expensive fixes. You never know, it might just scrape through!
All the best
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My 1995 Citroen Synergie 1.9TD (70K miles) was due it's MOT, I knew it was going to fail the exhaust test (puked black smoke and laid down a sheet of carbon on the drive when revved hard).
Garage 1 thinks it's a failed turbo, Garage 2 think it's a blocked/very dirty exhaust pipe.
I take advice from this forum, change air filter/fuel filter, pour some Redex in the fuel tank and drive the car for 100 miles (took my daughters to the Zoo!). Soon as I get the car home, I revved it again, the black smoke was still evident but perhaps not quite so bad.
Today the car goes to Garage 2 for a check out and MoT (they don't MoT themselves). They said they'd taken the exhaust down and the Turbo was spinning but the car seemed gutless (no kick when the Turbo should cut in) and there is a noise from the turbo as if someone's left a window slightly open - but car PASSES the MoT!!???
There are loads of questions here, but what I'd really like to know is if there was a Turbo or Turbo related problem (Intercooler or Wastegate) could that cause the black smoke? and would the car still reach it's top speed and have good fuel consumption - which it does?
Oh, and how did it get through the MoT.....
My aplogies for a long post.
Eddie.
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