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jeremymarksuk · Jun 21st, 2006, 16:32

Is there an update to this thread as my V40 is now making a hissing noise again, the mechamaniac cannot find any air leaks on the hoses (they were replaced last year) and it is not the MAF unit (replaced last year aswell).

It is not down on power but there is a hissing noise which is very loud as it comes on boost.

Could it be the EGR valve? I also have oil in the same place and the bolts have been tightened up.

Any words of advice most welcome.

Jeremy

Jun 21st, 2006, 16:32	#26
jeremymarksuk Jeremymarksuk Last Online: Oct 20th, 2015 08:55 Join Date: Oct 2004 Location: dorset	Odd Noise Is there an update to this thread as my V40 is now making a hissing noise again, the mechamaniac cannot find any air leaks on the hoses (they were replaced last year) and it is not the MAF unit (replaced last year aswell). It is not down on power but there is a hissing noise which is very loud as it comes on boost. Could it be the EGR valve? I also have oil in the same place and the bolts have been tightened up. Any words of advice most welcome. Jeremy