Diesel emissions

Test as presented firstly, my emmissions tester has OBD lead so plug that in ,follow screen prompts re idle and full load and test at highest possible revs, VITO's, some Renaults etc only go to 3/3500 revs so that is the engine speed they get tested at.
so nearly always low result, but OBD picks up revs and therefor minimum smoke

You can only test what is in front of you

Hi re03xys,
On some vehicles this is a design feature in regards to the engine not achieving the required revs .
In section 7.4 of the inspection manual gives instruction on the steps to be taken regarding this issue.
Where cases arise as billyloadsamud had already said there's not much you can do but to make the effort in the normal way and stick the probe up the tail pipe(correctly)and see what happens.if you get a reading then whoopee,,!if not ,as instructed by the inspection manual the tester should make a note on the printout of the issue,if you get a printout from the DSM that is.
Where the DSM will not produce a printout we use a templet that we can just print off and just fill in the blanks (see photos),saves having to manually wright it all up plus the relevant page from the inspection manual which can be kept with your vt 40 plus one for the presenter .
Because of the design features which prevent max revs,I would advise against carrying out acts to force an engine to reach max revs and just test as presented,makes the job a bit easier.
Welcome to the forum.

.......and there is no requirement to give the vehicle presenter a copy of the pint-out.

With regard to customer service on the smoke test, I always advise:

No acceleration detected during smoke test, result 0.00/m, print out not generated

And do as per the manual for our own copy.

There is no need for the special notice because the manual has been updated (1st January 2012).

Section 7.4 refers.


Do try to keep up.

they're saving themselves paper, pretty coloured ink and distribution costs davidg. They don't care how much the centre has to provide

Its not just a case of scrawling on vt 40 or just not making the effort to record the info on the outcome in these cases.
its very clear on what to do in the manual
The important part is -

This information must be recorded and kept with the emissions records

It dosent say record it on a vt 40 or the mot documentation does it.
Providing test stations keep their vt vt40 s for more them 3 month and staple the emissions result/outcome together then I can't see a problem.
It's not going to look very good when some one asks for a printout or outcome from a smoke test and you say I don't keep them davidg.
Now go and write out a 100 lines.

This information must be recorded and kept with Emissions Records!

But in the meantime its not davidg ,nitros44 or any one else's way,its the way vosa want it davidg
There must be a bigger explaination for it we don't know about
In the meantime I will make enquiries