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[Munchie]

I have had a recent problem with the emissions system of my 2.5 V6 Estate.  It seems that the system is becoming so over pressurised that it is enough to blow the 2 rubber connectors in the front pipe of the system.  This rigid pipe (stainless?) can be seen at the front of the engine bay between the radiator and the front of the engine.  The pipe can be identified by the fact it has a cylindrical chamber within it's form.  The 2 rubber connectors (circa 6cm long) connect this front pipe to other rigid pipe in the system which are attached to the engine itself.  I originally thought the blowing/splitting of these connectors was the fault itself but having changed these for 2 new vauxhall supplied items I know now it's a symptom of the problem.  The 2 items lasted no longer than about 10 miles of driving.
Do any of you experts out there have any idea as to what the problem can be?  Any help/advice would be most appreciated - thanks!

[feeutfo]

metal pipe between rad and engine with round section sounds like aircon pipe to me. Aluminium?

Sorry, i am forgetting my manners,welcome to the forum Munchie. Keep posting info, maybe a pic. Someone will know the answer to your problem.

[markey mark]

blocked cats mate ! which side blows off ?? if its both you need both cats whichever side is blowing that side cat is knackered

[markey mark]

metal pipe between rad and engine with round section sounds like aircon pipe to me. Aluminium?

Sorry, i am forgetting my manners,welcome to the forum Munchie. Keep posting info, maybe a pic. Someone will know the answer to your problem.

its the egr system chris  

[Kevin Wood]

metal pipe between rad and engine with round section sounds like aircon pipe to me. Aluminium?

Sorry, i am forgetting my manners,welcome to the forum Munchie. Keep posting info, maybe a pic. Someone will know the answer to your problem.

its the egr system chris  

I think it's the secondary air injection system (pipe that crosses the front of the cam cover and feeds into each exhaust manifold via a short rubber section).

I agree most likely blocked cat(s).

Could try removing the stainless pipe and blocking each rubber pipe with a 15mm plumbing stop-end and see which one blows.


Kevin

[feeutfo]

metal pipe between rad and engine with round section sounds like aircon pipe to me. Aluminium?

Sorry, i am forgetting my manners,welcome to the forum Munchie. Keep posting info, maybe a pic. Someone will know the answer to your problem.

its the egr system chris  

Oh that old thing, forgotten about that i aint got one. Whoops.