Couple of points caught my eye ...
1) Dangerously failed cars cannot be driven away (seems fair). So is
there a storage charge ? What if a test station simply runs out of room
after stacking a few successive dangerous fails ?
2) Tyre pressures are now tested. Seems quite a faff. Will missing or
incorrect valve caps be a fail ?
On Sun, 20 May 2018 15:52:56 -0000 (UTC), Jethro_uk
Something that caught my eye on the BBC red button text was that
diesel vehicles with a particulate filter will have to pass
more-stringent tests, which implies that those without a filter won't
be tested, or at least not so stringently. That suits me fine as my
old diesel Ford Fusion certainly doesn't have any particulate filters.
I was told that it is dependent on Euro rating: the higher the Euro rating
of the engine (which equates with more recent cars) the more stringent the
test. The garage didn't anticipate that they'd be failing many cars: it
seems that garages have been unofficially observing (but not officially
recording) the situation before the rules come in, so they are skilled at
applying the rules correctly; my garage said on that basis, they haven't
been "failing" any cars so far.
How do MOTs get round the fact that the new no-smoke rule for diesels will
mean that everyone will make sure they drive the car for a while before
taking it in, so the engine is hot and less likely to smoke when first
started? Most diesels that produce acrid white or pale blue smoke only do so
when cold, if the glow-plugs haven't heated the air enough yet, and black
smoke is only produced on heavy acceleration, not when starting or at idle.
I haven't looked at the new regs, but something I've heard in
radio discussions over the last week is that any visible soot
from a diesel is now a fail, and this is specifically intended
to get a lot of old particulate poluting diesels off the road.
[email address is not usable -- followup in the newsgroup]
Chatting to mine, he said that ANY sign that the DPF has been tampered
with and it would arouse his suspicions and maybe an automatic fail. My
car showed a 0.6 on the meter, but then I tend to properly maintain it.
Judging by my visual assessment of cars accelerating up a long
incline as they leave the village where I live is that a lot of
cars are going to fail the new MOT then.
What happens if the DPF does a regen during the MOT test ?.
My previous diesel Honda (non-DPF, so I think euroIV) you couldn't
normally see the plume, except when accelerating up a motorway ramp,
with some headlights behind you.
Present diesel Audi (with DPF euro V) I've never seen anything come out
the pipes, and that does involve standing and watching its MOT tests.
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