Mot fail for emissions

[chiefmechanic]

Mot fail

RESULT. car passed mot. With 0.6hc and 213ppm. Defect was a faulty ign pos.

[chiefmechanic]

In N Ireland mot's are done by government agency's. I'm allowed 3.5 and 1200ppm.

[Rusty]

I thought that anything post 92 in S2/4 world was 0.3% CO and 200ppm at fast idle You need a cat to get it below 0.7% or thereabouts.

[UrS4boy]

That's not going to help, he's got no cats to warm up.
John

I guess I was too subtle for you.

Here kitty, kitty. Nice kitty.

(He needs to find and install a catalytic converter system)

[s2driveruk]

basically I'd agree with the above, you do need to give it a good stretch before taking it to the garage IMO

[s2driveruk]

we dont have e85 here unfortunately - i wish we did for exactly that purpose

[caterpillar]

have 40% full with gas, then fill E85 in....ca 10 liter

[chiefmechanic]

Emission fail

Any idea which spark plugs I should use. Will the standard plug work well with a lightly modified engine. I tend to drive sedately with a minor thrash now and then.

[johne]

We have an old diesel VW LT van which only does a few trips to the beach every year, it will not pass emissions unless you thrash it about 5 miles down the dual carriageway and back then drive it straight into the test station while it's still hot.

mmm, I think diesel is the difference here.

John

[johne]

As it's pre 1995 no cat is not a problem, just got to get HC below 1200. I don't understand why the K&N should be a problem with that?

John

[newsh]

That's not going to help, he's got no cats to warm up.

John

We have an old diesel VW LT van which only does a few trips to the beach every year, it will not pass emissions unless you thrash it about 5 miles down the dual carriageway and back then drive it straight into the test station while it's still hot.

[UrS4boy]

Yes. 1st registration 1993. oil changed and air filter checked. K&n panel filter in the air box fitted

There's your problem. K&N filter.

That and no cats (don't care about your rr Urq story, that is not the car in question) and not checking that the G62 is working properly.

[chiefmechanic]

Mot fail

Yes. 1st registration 1993. oil changed and air filter checked. K&n panel filter in the air box fitted

[johne]

CO is no problem as due to age and test limits it is allowed to run up to 3.5% vol or less.

but only if it was first used before 31 July 1995? If yes, HC can be up to 1200ppm.

John

[chiefmechanic]

Mot fail on emissions.

CO is no problem as due to age and test limits it is allowed to run up to 3.5% vol or less. 1.990 is high though. I am also allowed 1200ppm so i need to get the numbers down from 3380. I have a 20v ur quattro with an rr engine and no cats and it runs at 0.5% vol. The HC is he problem.