Failed emissions

[kx3210]

I found this hose disconnected.  What does it do and what is it connected to. Any idea if this would cause the car to fail emissions ?

[Gaz mr-s]

Emissions, wouldn't think so.  It is for fuel vapour....container on right side is a charcoal canister.

What did the MOT tester tell you?  If you don't know posting a pic of the figures might help.

[Ardent]

@kx3210
Hello and welcome BTW.

maybe say hello in the newbie section.

Do you normally run it without the rocker cover, cover?

[Ardent]

Is it new to you?
Has it passed before?
Any changes to zorst system?
Vac leak?
Cat up to temp prior to test?

[fawtytoo]

O2 sensors would affect emissions.

[Carolyn]

I take it there's no engine warning light?  I suppose not, as that would be a fail. A bad O2 sensor will trigger a warning light, so it's almost certainly not a sensor.

That leaves the Mass Air Flow meter (which won't trigger an engine light) an air leak in the exhaust, or a catalytic convertor that has reached its sell-by date.

If you still have the cat it left the fsctory with, then a duff cat is highly likely.

Please post a pic of the emmissions read out that the tester gave you as that will enable us to give better advice.

Also if you get and OBD dongle and a phone app like Torque Pro, you can post any errors it comes up with.

[Gaz mr-s]

I take it there's no engine warning light?  I suppose not, as that would be a fail.

Not neccessarily, prior to a registration 1st July 2003, it's not a failure.

[tets]

Just to add, was at operating temperature when they tested it? It does help if it's had an Italian tune up just before the test!