Help..! Sudden Diesel Smell
06-24-2009, 12:06 PM
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After a bad week with everything going wrong, I was driving home this evening and whilst coming off the motorway a heavy waft of diesel smell came into the cabin. As I was close to home I carried on for a couple of miles with the windows down for fresh air. There were no errors and no loss of power just a nasty smell of diesel.
Having removed the engine cover there was a little smoke from the top of the inlet manifold - diesel mist it appears.
The area around a couple of the recessed manifold bolts next to the injector rail was wet so I dabbed a tissue on it and it was clear so definately not oil.
I gave it a good clean and started the engine again but could not see any fresh diesel deposits so I guess it must have come out under high load pressure from somewhere??
Any ideas of likely possibilities??
I'll leave the car at home tomorrow as I dont want to risk any further damage.
530d M Sport 2004 - Swirlflaps Removed...
Thanks Guys
Having removed the engine cover there was a little smoke from the top of the inlet manifold - diesel mist it appears.
The area around a couple of the recessed manifold bolts next to the injector rail was wet so I dabbed a tissue on it and it was clear so definately not oil.
I gave it a good clean and started the engine again but could not see any fresh diesel deposits so I guess it must have come out under high load pressure from somewhere??
Any ideas of likely possibilities??
I'll leave the car at home tomorrow as I dont want to risk any further damage.
530d M Sport 2004 - Swirlflaps Removed...
Thanks Guys
06-24-2009, 12:19 PM
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My strong guess is a cracked exhaust manifold. Here's a great thread about it!
Maybe worth to check it out. Good luck with the issue!
Maybe worth to check it out. Good luck with the issue!
06-24-2009, 12:22 PM
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Originally Posted by Anzafin' post='922425' date='Jun 24 2009, 09:19 PM
My strong guess is a cracked exhaust manifold. Here's a great thread about it!
Maybe worth to check it out. Good luck with the issue!
Maybe worth to check it out. Good luck with the issue!
06-24-2009, 12:24 PM
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Originally Posted by 530DMSport' post='922429' date='Jun 24 2009, 11:22 PM
Thanks Anzafin.. but how would a cracked exhaust manifold cause diesel to be on the inlet manifold???
edit: Or do you mean that you spotted actually diesel splashes (the fuel) on your intake manifold? Sorry it's my English...
06-24-2009, 12:47 PM
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Originally Posted by Anzafin' post='922431' date='Jun 24 2009, 09:24 PM
Hmmm... Check your air tubes; EGR, turbo....
edit: Or do you mean that you spotted actually diesel splashes (the fuel) on your intake manifold? Sorry it's my English...
edit: Or do you mean that you spotted actually diesel splashes (the fuel) on your intake manifold? Sorry it's my English...
06-24-2009, 01:27 PM
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check your fuel return lines
06-24-2009, 01:51 PM
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Originally Posted by hey3688' post='922553' date='Jun 24 2009, 10:27 PM
check your fuel return lines
Do you mean one of the the following items..
Real-oem
06-24-2009, 02:43 PM
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Can I presume you did the swirl flaps yourself ??
Its possible you never seated one of the rubber sealing rings properly when you refitted the inlet manifold ? and its only just starting to let go ?
Just a guess mate.....or a loose stud maybe from when you did the same job, do you use thread lock on those things ??
Its possible you never seated one of the rubber sealing rings properly when you refitted the inlet manifold ? and its only just starting to let go ?
Just a guess mate.....or a loose stud maybe from when you did the same job, do you use thread lock on those things ??
06-24-2009, 02:52 PM
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Originally Posted by 530DMSport' post='922591' date='Jun 24 2009, 10:51 PM
if performance is not affected just thought it might be return pipes