Black smoke on boost?
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- Posts: 16
- Joined: 19 Feb 2024, 18:52
Re: Black smoke on boost?
Just an update, ok the brake is now fixed, turned out the new cylinder head had a brass grub screw in it were the pump goes at the end of the cylinder head. Removed this and have brakes again. As far as the black smoke is concerned EGR for our vehicle is no longer available from Citroen/ Peugeot and there’s no non genuine available so managed to find a decent secondhand one also fitted new heat washers under the fuel injectors and wound the spring plate up on the diesel pump under the diaphragm none of which has made any difference and so it still smokes like a train.
Last edited by Barney00731102012 on 27 Oct 2024, 23:31, edited 2 times in total.
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- Donor 2024
- Posts: 2773
- Joined: 11 May 2022, 19:54
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Re: Black smoke on boost?
Even if you blank the EGR off, which is illegal, it still wouldn't give black smoke out of the exhaust. Is there a DPF fitted to the vehicle?? If there is then maybe a previous owner has punched holes through it hence the black smoke.
Ryan
'99 Xsara 1.6 X (Red) with Sunkissed bonnet. T59 SBX
'54 Astra Estate 1.7DTI (Artic White)
'06 C8 2.2Hdi Exclusive (Aster Grey)
Champion of Where's CitroJim
Yes I ask the stupid questions, because normally it is that simple.
'99 Xsara 1.6 X (Red) with Sunkissed bonnet. T59 SBX
'54 Astra Estate 1.7DTI (Artic White)
'06 C8 2.2Hdi Exclusive (Aster Grey)
Champion of Where's CitroJim

Yes I ask the stupid questions, because normally it is that simple.
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- Posts: 16
- Joined: 19 Feb 2024, 18:52
Re: Black smoke on boost?
Just a quick update the brake problem now solved, removed the brake pump from the new cylinder head and there’s a brass grub screw which needs to be removed before fitting the pump. The black smoke problem has improved, turned out the diesel pump timing was half a tooth to advanced. So miles better however it still smokes for a little bit when the engine is cold when you accelerate. Not sure if the pump needs to be tweaked a bit more or the spring platform under the LDA diaphragm needs the be raised a couple of clicks apart from that all good. Although it’s never going to break the land speed record Peugeot Boxer 1f600