BLOWING NOISE ON 2001 HDI 90 BHP 406

[wolfyhdi]

Need help i have an blowing noise coming from car had exhaust checked and is fine.Also ticking noise coming from rocker cover anyone got any ideas.Could i have a blockage in my breather pipes?
Your help would be appreciated

[Welly]

Has anyone checked the exhaust flexible pipe on the down pipe from the manifod as these can leak. They are difficult to see as well!

[djp30djp]

Try getting someone to partly block the exhaust with a handfull of rag, this will increase the noise if it is blowing.
Is that tapping noise realy from the cam cover? That's where I thought mine was from when the bottom pulley failed.
Does it go away or get quieter when the revs increase? Check for signs of metal filings round the pulley, In the end I quickly removed the alternator drive belt and the noise disapeared, then I knew it was the pulley.

[wolfyhdi]

Thanks welton tried the flexi-pipe that is fine.I can see a small rubber pipe near top rear of engine .Could this be a problem .also my mpg is down slightly and performance is a bit sluggish
Cheers wolfyhdi

[hdinewboy]

sluggish with a blowing noise ,sounds like a split in the boost pipe out of the turbo.