MOT pass, Emissions....

Unread post by **Rp0thejester** » 10 Oct 2022, 19:28

My C8 passed its MOT today, I don't know how but she did. My question is....I have dpf warnings, it says it's faulty etc. So can someone explain these emission results to me please.

Unread post by **Paul-R** » 10 Oct 2022, 19:52

Easy. The sun shines on the righteous.

Unread post by **Rp0thejester** » 10 Oct 2022, 19:58

Pmsl!! I was telling everyone my car is an easy fail which is mine got done before theirs, and she passed!! But the faulty dpf should of made it fail surely. OR is she lying to me with dodgy electrics??

Unread post by **KennyW** » 10 Oct 2022, 20:25

It could be the one of the sensors are faulty giving false readings.

My son's golf diesel is doing the same.

Kenny

Unread post by **MattBLancs** » 10 Oct 2022, 20:43

Other thing to add is diesel emissions test at MOT: rev engine to governed maximum, unloaded doesn't ask a lot of the engine or fuel system. Unless you've got something seriously wrong (e.g EGR jammed open) or the car hasn't seen redline once in the twelve months since last it was in for the test (some folks labour diesels routinely, year round. That blast of 4500+ rpm clears the pipes somewhat!) Then should not pose too much challenge for MOT emissions test.

A pass is a pass!

Matt

Ross_K · Unread post by **Ross_K** » 10 Oct 2022, 21:16

Speaking of sooty emissions, that MOT station needs to clean the toner out of their laser printer

Hell Razor5543 · Unread post by **Hell Razor5543** » 10 Oct 2022, 23:30

Ross_K wrote: 10 Oct 2022, 21:16 Speaking of sooty emissions, that MOT station needs to clean the toner out of their laser printer

Not a toner issue. Either the photo-optic drum or the fuser is shot.

Unread post by **Paul-R** » 11 Oct 2022, 08:22

That's the power of this forum. Such breadth of knowledge and expertise.

Gibbo2286 · Unread post by **Gibbo2286** » 11 Oct 2022, 08:59

Paul-R wrote: 11 Oct 2022, 08:22 That's the power of this forum. Such breadth of knowledge and expertise.

But nobody answered the op's question.

Unread post by **RichardW** » 11 Oct 2022, 09:15

If the risk of filter clogging warning comes on as soon as you start the engine, and it's done 100k + miles, then the ECU has probably decided the DPF is end of life with the ash content. However as you have seen if the pressure are OK, it will keep working and regenning. Eventually it will cause problems, but in the mean time, you can tell the computer a new DPF has been fitted and the nagging will go away!

Unread post by **Paul-R** » 11 Oct 2022, 10:11

Gibbo2286 wrote: 11 Oct 2022, 08:59But nobody answered the op's question.

Yes I did.

Paul-R wrote: 10 Oct 2022, 19:52 Easy. The sun shines on the righteous.

Unread post by **MattBLancs** » 11 Oct 2022, 20:50

And so did I!

MattBLancs wrote: 10 Oct 2022, 20:43A pass is a pass!

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MOT pass, Emissions....

MOT pass, Emissions....

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