05 75 CDTI Classic - Whooshing sound and smoke under load

zan110 · 26th September 2007, 13:28

Hi, I am now suffering from a loud whooshing sound from the intake system accompanied by some smoke from the exhaust under acceleration above about 2500rpm and a reduction of power. There are no symptoms when the engine is revved off load. The car has done just over 25,000miles from new.

I suspect the turbo and induction system, perhaps the EGR valve. The turbo is working and there are no obvious leaks, dirty smoke marks etc. Any suggestions?

Any help would be greatly appreciated
I dont believe it..fix the stereo and a couple of days later this!
zan

Ross R75 · 26th September 2007, 15:12

Quote:

Originally Posted by zan110

Hi, I am now suffering from a loud whooshing sound from the intake system accompanied by some smoke from the exhaust under acceleration above about 2500rpm and a reduction of power. There are no symptoms when the engine is revved off load. The car has done just over 25,000miles from new.

I suspect the turbo and induction system, perhaps the EGR valve. The turbo is working and there are no obvious leaks, dirty smoke marks etc. Any suggestions?

Any help would be greatly appreciated
I dont believe it..fix the stereo and a couple of days later this!
zan

Almost certainly a split or leaking boost hose. Check the hose from turbo to intercooler and the hose from intercooler to EGR valve assembly. They are large diameter black hoses. I think a fault with the EGR valve itself is unlikely. There's only one moving part in it and thats the exhaust intake piston. It could be stuck in the open position but its highly unlikely. Symptoms would be similar to a split boost hose. Final possibilities are a damaged intercooler or a damaged turbine housing on the turbo, again very unlikely so I suspect its boost hose related.

GreyGhost · 26th September 2007, 15:19

If as Ross says it is the intercooler hose then you need to check out Julesbass Tips here:-
http://www.the75andztclub.co.uk/foru...ead.php?t=9653

zan110 · 26th September 2007, 20:15

Can't see any obvious splits or holes, all the rubber pipes seem like new, EGR valve seems ok but plenty of greasy black deposits inside. I didnt remove it as my mate filled his diesel Pajero up with petrol so was distracted on a mercy mission.
Will look again tomorrow.
Where would you block off the EGR to test it?
thanks

Ross R75 · 26th September 2007, 22:26

Quote:

Originally Posted by zan110

Can't see any obvious splits or holes, all the rubber pipes seem like new, EGR valve seems ok but plenty of greasy black deposits inside. I didnt remove it as my mate filled his diesel Pajero up with petrol so was distracted on a mercy mission.
Will look again tomorrow.
Where would you block off the EGR to test it?
thanks

I have an EGR replacement fitted. You could try blocking off the exhaust induction pipe on the side of the EGR valve. When checking the boost hoses you really need to make a physical inspection using the good old mk1 fingers, visual inspection isn't enough. Feel down the hoses squeezing as you go, this will reveal any splits.

zan110 · 29th September 2007, 12:58

Thanks Ross
Thorough visual inspection revealed athat a jubilee clip had failed on one of the turbo pipes behind the block (only visible with the acoustic cover and air filter removed). There is very little overlap between the hoses and the jubilee clips have to be very accurately placed. I removed it and turned it around to enable me to do it up parallel with the back of the engine block with a screw driver. This still was very awkward and resulted in bruises and scrapes to the arms!I guess that the clips are done up before the engine is placed in the body. Still it was an enormous relief to find the fault and thanks to you and the Forum for guidance. I have a couple of pictures showing where the pipe was disconnected in case anyone else has this problem but can't quite work out how to attach them.
zan

Ross R75 · 29th September 2007, 23:10

No problem Zan, thats what we're all here for, glad to be of help. Cuts and bruises eh? It wouldn't be the same without them. No pain, no gain and all that. Post the pics if you can because sure as the sky is blue, this will happen to somebody else.

GreyGhost · 30th September 2007, 09:49

Quote:

Originally Posted by zan110

I have a couple of pictures showing where the pipe was disconnected in case anyone else has this problem but can't quite work out how to attach them.
zan

Have a look at Simons very helpful tips. 3rd post.

http://www.the75andztclub.co.uk/foru...7989#post87989

Hope this helps

zan110 · 12th October 2007, 12:21

Well I shall try again, so here are the pictures, I hope...[IMG]

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[IMG]

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26th September 2007, 13:28	#1
zan110 Regular poster MG ZT-T+ Join Date: Aug 2007 Location: Exeter Posts: 76 Thanks: 1 Thanked 1 Time in 1 Post	05 75 CDTI Classic - Whooshing sound and smoke under load Hi, I am now suffering from a loud whooshing sound from the intake system accompanied by some smoke from the exhaust under acceleration above about 2500rpm and a reduction of power. There are no symptoms when the engine is revved off load. The car has done just over 25,000miles from new. I suspect the turbo and induction system, perhaps the EGR valve. The turbo is working and there are no obvious leaks, dirty smoke marks etc. Any suggestions? Any help would be greatly appreciated I dont believe it..fix the stereo and a couple of days later this! zan

29th September 2007, 23:10	#7
Ross R75 Posted a thing or two Rover 75 Saloon Join Date: Apr 2007 Location: Edinburgh Posts: 1,535 Thanks: 137 Thanked 229 Times in 156 Posts	No problem Zan, thats what we're all here for, glad to be of help. Cuts and bruises eh? It wouldn't be the same without them. No pain, no gain and all that. Post the pics if you can because sure as the sky is blue, this will happen to somebody else. __________________ Copperleaf R75 CDT 160

12th October 2007, 12:21	#9
zan110 Regular poster MG ZT-T+ Join Date: Aug 2007 Location: Exeter Posts: 76 Thanks: 1 Thanked 1 Time in 1 Post	Well I shall try again, so here are the pictures, I hope...[IMG][/IMG] [IMG][/IMG]

26th September 2007, 15:19	#3
GreyGhost Banned 180+ Sport Auto Join Date: Oct 2006 Location: Bedford Middle Level Posts: 17,787 Thanks: 0 Thanked 18 Times in 5 Posts	If as Ross says it is the intercooler hose then you need to check out Julesbass Tips here:- http://www.the75andztclub.co.uk/foru...ead.php?t=9653

26th September 2007, 20:15	#4
zan110 Regular poster MG ZT-T+ Join Date: Aug 2007 Location: Exeter Posts: 76 Thanks: 1 Thanked 1 Time in 1 Post	Can't see any obvious splits or holes, all the rubber pipes seem like new, EGR valve seems ok but plenty of greasy black deposits inside. I didnt remove it as my mate filled his diesel Pajero up with petrol so was distracted on a mercy mission. Will look again tomorrow. Where would you block off the EGR to test it? thanks

29th September 2007, 12:58	#6
zan110 Regular poster MG ZT-T+ Join Date: Aug 2007 Location: Exeter Posts: 76 Thanks: 1 Thanked 1 Time in 1 Post	Thanks Ross Thorough visual inspection revealed athat a jubilee clip had failed on one of the turbo pipes behind the block (only visible with the acoustic cover and air filter removed). There is very little overlap between the hoses and the jubilee clips have to be very accurately placed. I removed it and turned it around to enable me to do it up parallel with the back of the engine block with a screw driver. This still was very awkward and resulted in bruises and scrapes to the arms!I guess that the clips are done up before the engine is placed in the body. Still it was an enormous relief to find the fault and thanks to you and the Forum for guidance. I have a couple of pictures showing where the pipe was disconnected in case anyone else has this problem but can't quite work out how to attach them. zan