Paradoxia0
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| posted on 23/4/10 at 02:02 PM |
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Any tips on how to squeeze under emission limits?
Hi
Taking the car for an MOT this afternoon and wondered if anyone has any tips to squeeze under emissions limits if it is a bit high?
The engine is a 4.2 Rover V8
I think increase idle speed is one, and (at a push) retard the ignition to make it run hotter and cleaner but any other (easy) ones anyone can think
of?
Mark
There is no replacement for displacement...
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graememk
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| posted on 23/4/10 at 02:08 PM |
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arnt you on a q plate ?
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Paradoxia0
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| posted on 23/4/10 at 02:10 PM |
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Yup, on a Q but still has emissions stated on the V5 
There is no replacement for displacement...
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boggle
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| posted on 23/4/10 at 02:16 PM |
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do you have a cat fitted?
just because you are a character, doesnt mean you have character....
for all your bespoke parts, ali welding, waterjet, laser, folding, turning, milling, composite work, spraying, anodising and cad drawing....
u2u me for details
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A1
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| posted on 23/4/10 at 02:20 PM |
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take it to a small local garage...
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speedyxjs
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| posted on 23/4/10 at 02:27 PM |
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I thought a Q plate was visual test only?
How long can i resist the temptation to drop a V8 in?
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james h
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| posted on 23/4/10 at 02:33 PM |
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quote:
Originally posted by speedyxjs
I thought a Q plate was visual test only?
As did I...
If you have a cat fitted then I guess you need to get it as hot as possible before the test.
Otherwise, as A1 said, find a small friendly local garage...
James
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deezee
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| posted on 23/4/10 at 02:44 PM |
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quote:
Originally posted by speedyxjs
I thought a Q plate was visual test only?
Nope, Q plate is by DVLA and emissions are by VOSA. The whole Q plate / visual emissions thing only applies to pre IVA/SVA cars.
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tomgregory2000
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| posted on 23/4/10 at 03:51 PM |
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are you sure, im on a Q and dont have any emissions stated on my v5 so i must be visual smoke test only as there are no figures to go by?
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iscmatt
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| posted on 23/4/10 at 04:12 PM |
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i have 3.5% stated on my Q plate v5 and so i have to get under the limit, luckily my garage is a friendly place and as the readings read 3.4% and
fluctuated up to almost 4% he took the nozzle out, put it back on the machine and carried on with the test. (must have been happy with the first
reading  )
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Paul (Notts)
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| posted on 23/4/10 at 05:06 PM |
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tomgregory2000
look on the front of your V5 in the extra notes section
Mot depends on whether the computer has the notes added or the MOT station are aware of what to do. Some will just do the somoke check if the computer
does not tell the any limits.
Paul
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Paul (Notts)
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| posted on 23/4/10 at 05:07 PM |
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Mark, is it an EFI or Carb set up.
on the webber you just need to turn the idle mixture screws ( 2 of them ) in to reduce the emissions ( lean it off a little)
Paul
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AndyGT
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| posted on 23/4/10 at 08:42 PM |
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what is the ruling about taking the revs up to 3k revs? Or is that just CO?
nothing is impossible
everything is possible
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Paradoxia0
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| posted on 23/4/10 at 09:22 PM |
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Hi Guys
Panic over, the car sailed straight through the MOT and the emissions didn't even get commented on!
Thanks for the tips!
Mark
There is no replacement for displacement...
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