Evening peeps,, 

been driving around and had the window down and I’m pretty sure I can smell exhaust fumes ??,,, I’ve replaced the inlet manifold but that was a few months ago,, cleaned throttle housing and EGR as they were well caked in soot,,

could it be that one of these has got a leak they were all re fitted with new seal,, is there a way to check if one is leaking,, would soapy water sprayed on possibly find out. 
thanks peeps. 
oh the other thing is that it seems like every 2 weeks the revs stay at 1000 rpm and the engine really smells it’s been suggested that it’s trying to regenerate but the light has never come on to indicate this. If I take it for a quick 20 mile at 60-70 it’s stops this for a bit then it does it again. 2010 CECA engine VRS 

49 minutes ago, Hardy1812 said:

been driving around and had the window down and I’m pretty sure I can smell exhaust fumes

Exhaust flexipipe has gone porous?

The light will not come on during a regen, nor a failed regen, only after a succession (dont know how many) of failed attempts at a regen.

 

Could it be that you are smelling the stink created by a hot DPF during the regen cycle?

7 hours ago, J.R. said:

The light will not come on during a regen, nor a failed regen, only after a succession (dont know how many) of failed attempts at a regen.

 

Could it be that you are smelling the stink created by a hot DPF during the regen cycle?

That could be a possibility mate as I don’t think the exhaust is leaking it sounds ok 

 

is there a way to tell if the DPF is knackered?? and that’s why it seems like 2 weeks max before this happens again ?? 

9 hours ago, KenONeill said:

Exhaust flexipipe has gone porous?

Will have a look but it does sound ok. No blowing etc 

30 minutes ago, Hardy1812 said:

Will have a look but it does sound ok. No blowing etc

That's the issue; it smells of exhaust but takes weeks, sometimes months, to become audible.

3 hours ago, Hardy1812 said:

is there a way to tell if the DPF is knackered?? and that’s why it seems like 2 weeks max before this happens again ?? 

It depends entirely on the mileage you have covered in that time, the post emissions fix ECU software takes no account of active regens from high speed runs, it triggers on calculated soot mass and not measured, mine was regenning every 120 miles despite the measured soot being very low or even zero after an 800 mile autoroute journey towing a 3 tonne barn door trailer.

 

I eventually paid to have a software "emissions rollback" and now it is extremely rare that I am aware of any regens.