L

Landmann

New Member

• Sep 18, 2024

• #1

Didn’t pass the MOT

…because of black smoke when accelerating hard - and - the emission value CO was too high (4,35). There is new air filter, new oil with filter - and I took here out for a 300 km spin before MOT today, but no way Norway! Mileage is 244.345km.
So please: Where shall I start?

 

Nodge68

Well-Known Member

• Sep 18, 2024

• #2

Never heard of a diesel being CO tested. In the UK it's just a simple smoke test.
Make sure the intake manifold is clear of accumulated goop.

 

andyfreelandy

Well-Known Member

• Sep 18, 2024

• #3

Check all intercooler hoses for splits and loose clips.