MOT emissions fail

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
It is dead simple
1, lift bonnet
2, locate sticker that says, 1.3, 1.4, 1.5 or whatevever
3, remove said sticker
4, rag the arse of it
5, present for mot

Smoke testing for pre 2001 (or summat like that!) vehicles, used to be 3.00 for all turbo diesels (this changed in late 2018) but now they have to go off what the sticker says, no sticker means they have to use the default value of 3.00.
Which means unless its a mobile smoke machine will pass no issues.

Any and I mean any tweaking of the inj pump, means the car will be unable to pass the smoke test at the stickers face value.

This sticker might have been on my car cough cough!
93 200tdi 140k = no chance!


Screen Shot 2020-03-09 at 21.05.42.png
 
LeadFarmer said:
How easy is this adjustment, is it just loosening a bolt and moving the cable?
Click to expand...
It is much easier to adjust the mot tester! I take mine to a little village garage that is used to older vehicles and farm vehicle. The emission test is done at just enough revs to register on the machine and done with sympathy. Rather than the previous place that just sat with their foot to the floor for, as far as I was concerned, far to long on an unloaded engine to be good for it!
 
lynall said:
It is dead simple
1, lift bonnet
2, locate sticker that says, 1.3, 1.4, 1.5 or whatevever
3, remove said sticker
4, rag the arse of it
5, present for mot

Smoke testing for pre 2001 (or summat like that!) vehicles, used to be 3.00 for all turbo diesels (this changed in late 2018) but now they have to go off what the sticker says, no sticker means they have to use the default value of 3.00.
Which means unless its a mobile smoke machine will pass no issues.

Any and I mean any tweaking of the inj pump, means the car will be unable to pass the smoke test at the stickers face value.

This sticker might have been on my car cough cough!
93 200tdi 140k = no chance!


View attachment 202564
Click to expand...

I didn't know about those stickers. When did they appear? Did the MOT testers put them in when the rules changed in 2018?
 
The smoke may of course simply be from over-fueling. Check the intercooler hoses etc - especially of it has had limited use lately.
:)
 
LeadFarmer said:
How easy is this adjustment, is it just loosening a bolt and moving the cable?
Click to expand...
Just look at cable at the pump and adjust so that it doesn't open fully.
Look under the throttle pedal and see if there is an adjustable bolt to stop pedal travel.
It just means mot tester has to be gentle on the throttle as it will not go beyond gentle.
 
Looks tidy, must be a pain to have mot problems.
If it was so bad that it wasn't tested, you should go out and blast it clear and then look at it yourself and see if it is a lot better.
 
I've added a double dose of Millers Ecomax (50ml to 25L BP Ultimate diesel) to an empty fuel tank. When thats used up I'll do a normal ratio mix and blast it about for a few miles.
Theres a bolt through the accelerator pedal that I can adjust on the MOT day, to lessen the travel of the pedal. I assume no point doing it now as I need to give it a full blast for a few miles.
I'll do an oil, oil filter & air filter change.
Still need to find that blooming sticker in the engine bay!!
 
LeadFarmer said:
I've added a double dose of Millers Ecomax (50ml to 25L BP Ultimate diesel) to an empty fuel tank. When thats used up I'll do a normal ratio mix and blast it about for a few miles.
Theres a bolt through the accelerator pedal that I can adjust on the MOT day, to lessen the travel of the pedal. I assume no point doing it now as I need to give it a full blast for a few miles.
I'll do an oil, oil filter & air filter change.
Still need to find that blooming sticker in the engine bay!!
Click to expand...

I thought my sticker was on the bulkhead, drivers side near master cylinder, but looked at photos of the bulkhead and couldn’t see it. Maybe it was on the top of the old radiator, or slam panel. I would check the bulkhead, and the top of radiator areas first.
If you present it for MOT, and they find the sticker, ask where it is and for them to show you. I’m sure it will fall off before the next MOT. ;)
 
No sticker on my bulkhead, but then I had a new galv bulkhead fitted a few years ago that was resprayed. No sticker anywhere else either, so they must have to work from the 3.0 value?
 
Often you hear someone puts an additive into the fuel tank then takes it in an Italian tuneup, then passing an MOT. But, has the additive actually helped? Or would 'ragging the shìt' out of it have worked just as well without it?
 
Last test I bought some Wynnes stuff, it was a pack of two bottles, first bottle was pollution control or something like that, which I put into the near empty tank, put 25 ltr of diesel in and by the time I was half way through that I could feel a difference. The engine - 200Tdi - was smoother and more responsive, when that was almost out I put in the other bottle which was the std injector cleaner with another 25 ltr, filled up when that was gone and ragged it the 20 miles to the test center and got a clean ticket.
I will do that again before the next test, worked for me.
 
Did they fail it? Without completing the smoke test? That gives you very little to go on, kind of like saying your vehicle failed on brakes, yeah, but which brakes?
 
You must log in or register to reply here.

Similar threads

T
Emissions
Replies
7
Views
1K
TR3a
T
J
Excessive smoke MoT failure
2
Replies
28
Views
3K
Rangieman123
Rangieman123
J
engine cuts out at high revs, eml on td5
Replies
2
Views
323
Tim4x4
Tim4x4
hbhughes
Injector pump gone bang :(
Replies
10
Views
1K
hbhughes
hbhughes
M
110 Station Wagon unladen weight and MOT class
Replies
5
Views
406
moth
M
Back
Top