Black smoke, engine surges

MissMoppet · 8th January 2018, 10:46

(Diesel auto). Following my post yesterday have removed and cleaned EGR valve which was almost completely blocked, fitted new clip to bottom of silicone hose - and gave it an Italian tune -up - 50mph in 3rd for several miles. Insignificantly better. Now I'm stuck. (105K miles and all filters regularly changed.) No smoke at these high revs, that I can see, but plenty in Drive.
Ideas most welcome please.

dave lincs · 8th January 2018, 10:49

Sounds like a leak on the intercooler or a split hose

Vossy · 8th January 2018, 10:53

Quote:

Originally Posted by dave lincs

Sounds like a leak on the intercooler or a split hose

That would be my best guess too, maybe the rings have popped on the intercooler hose, cheap and cheerful fix if it is this but always worth checking. A split intercooler pipe is very awkward to see because they usually split underneath where you cant see it, needs removing and checking.

MissMoppet · 8th January 2018, 11:27

The top hose is one of Jules shiny 10 ply jobs, so you mean the one underneath perhaps?

Vossy · 8th January 2018, 12:39

Yes I would have a good look at it, at least it rules it out as a cause of the problem.

Arctic · 8th January 2018, 14:06

Hi Dave.
Go over your work on the intercooler top hose you have carried out, first remove the hose, then remove the bend making sure the Viton O-rings are all ok and in place.

Refit the bend making sure the bend and it's O-rings are seated and pushed home fully into the intercooler, check and refit the top hose tightening the jubilee clips, on the bend and onto the EGR.

If you have done this already then pleas ignore the above, but if was ok until you cleaned the EGR then it can only what you have disturbed ?

MissMoppet · 8th January 2018, 17:52

Problem solved, thanks to all. Small rubbed hole in small hose + I hadn't put the clip back that joins the EGR to turbocharger. Doesn't it all seem simple when your faults are pointed out to you?

8th January 2018, 10:46	#1
MissMoppet Posted a thing or two R 75 Tourer diesel Conny 2002, V6 Conny saloon petrol 2003 Join Date: Mar 2013 Location: Taunton Posts: 1,125 Thanks: 212 Thanked 406 Times in 223 Posts	Black smoke, engine surges (Diesel auto). Following my post yesterday have removed and cleaned EGR valve which was almost completely blocked, fitted new clip to bottom of silicone hose - and gave it an Italian tune -up - 50mph in 3rd for several miles. Insignificantly better. Now I'm stuck. (105K miles and all filters regularly changed.) No smoke at these high revs, that I can see, but plenty in Drive. Ideas most welcome please. __________________ Rover 75 Tourer Conny 2002 remapped 160 auto, R75 V6 2.5L auto Connoisseur 2003

8th January 2018, 11:27	#4
MissMoppet Posted a thing or two R 75 Tourer diesel Conny 2002, V6 Conny saloon petrol 2003 Join Date: Mar 2013 Location: Taunton Posts: 1,125 Thanks: 212 Thanked 406 Times in 223 Posts	The top hose is one of Jules shiny 10 ply jobs, so you mean the one underneath perhaps? __________________ Rover 75 Tourer Conny 2002 remapped 160 auto, R75 V6 2.5L auto Connoisseur 2003

8th January 2018, 14:06	#6
Arctic Give to Learn Freelander 2 Join Date: Aug 2010 Location: West Midlands Posts: 18,701 Thanks: 1,155 Thanked 6,407 Times in 3,874 Posts	Hi Dave. Go over your work on the intercooler top hose you have carried out, first remove the hose, then remove the bend making sure the Viton O-rings are all ok and in place. Refit the bend making sure the bend and it's O-rings are seated and pushed home fully into the intercooler, check and refit the top hose tightening the jubilee clips, on the bend and onto the EGR. If you have done this already then pleas ignore the above, but if was ok until you cleaned the EGR then it can only what you have disturbed ? __________________ Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise "

8th January 2018, 17:52	#7
MissMoppet Posted a thing or two R 75 Tourer diesel Conny 2002, V6 Conny saloon petrol 2003 Join Date: Mar 2013 Location: Taunton Posts: 1,125 Thanks: 212 Thanked 406 Times in 223 Posts	Problem solved, thanks to all. Small rubbed hole in small hose + I hadn't put the clip back that joins the EGR to turbocharger. Doesn't it all seem simple when your faults are pointed out to you? __________________ Rover 75 Tourer Conny 2002 remapped 160 auto, R75 V6 2.5L auto Connoisseur 2003

8th January 2018, 10:49	#2
dave lincs Posted a thing or two Rover 75 Saloon Join Date: Mar 2014 Location: Louth Posts: 1,409 Thanks: 380 Thanked 986 Times in 476 Posts	Sounds like a leak on the intercooler or a split hose

8th January 2018, 12:39	#5
Vossy Why? ... MG ZT+ Cdti Auto saloon. Join Date: Jul 2014 Location: Blockeswich, South Staffs Posts: 1,548 Thanks: 173 Thanked 483 Times in 330 Posts	Yes I would have a good look at it, at least it rules it out as a cause of the problem.