Iskapsts
Member
Hi fellow Mercedes owners,I’m a really newbie here and also with Mercedes as owning my first viano for 2 weeks,and I really need some advice here.It’s 2008 lwb 3.0cdi
The hiss ir really loud and starts at around 1500 rmp
Whenever I accelerate hard or gently.
It hissing even when decelerate until gear disengages and rpm drops to idle,hissing is only during drive when I presume turbo kicks in.infact the hiss is so loud that it makes people turn heads,at around 2000-3000rpm I cannot even hear the engine as hiss sound overcomes it.
Despite no black smoke from exhaust during hiss which most likely points to split intercooler hoses(as had with other cars) I have removed checked both sides rubber intercooler hoses no splits.
Checked turbo seal,inlet pipes all seems to be well,intercooler it self looked clean no fresh oil or anything suspicious on neither sides,besides all that didn’t notice any power loss,I’m really out of options here.could it be blocked CAT or dpf if these comes with dpf.
Any advice would be much appreciated.
Regards igors
*** little update,there is some air rushing escaping can be hear while stationary holding around 2500rpm,but it’s just mild compare to driving hisss wusshh.
The hiss ir really loud and starts at around 1500 rmp
Whenever I accelerate hard or gently.
It hissing even when decelerate until gear disengages and rpm drops to idle,hissing is only during drive when I presume turbo kicks in.infact the hiss is so loud that it makes people turn heads,at around 2000-3000rpm I cannot even hear the engine as hiss sound overcomes it.
Despite no black smoke from exhaust during hiss which most likely points to split intercooler hoses(as had with other cars) I have removed checked both sides rubber intercooler hoses no splits.
Checked turbo seal,inlet pipes all seems to be well,intercooler it self looked clean no fresh oil or anything suspicious on neither sides,besides all that didn’t notice any power loss,I’m really out of options here.could it be blocked CAT or dpf if these comes with dpf.
Any advice would be much appreciated.
Regards igors
*** little update,there is some air rushing escaping can be hear while stationary holding around 2500rpm,but it’s just mild compare to driving hisss wusshh.
Attachments
Last edited: