MOT test

[ian_s]

Is it a requirement to have an air filter fitted to a car, to pass an MOT?
my polo has failed its MOT, but it only fails on high HC levels
this seems to go away, if the air filter is removed. so if i dont have an airfilter fitted? will it pass?

tia
Ian

[Topple]

when I had my S3, it got through its last mot with just the snorkle and no air filter.

[muddyweb]

Sounds like it could do with a tune.

[tenpolequint]

You do not need to have an air filter for an MOT. Until the emission tests you could get an mot for a car without an engine.

[LOULA]

I work for a main car dealer and it cannot fail for not having air filter fitted.
Its not something that they check as part of mot test, but agree with muddy webb sounds like needs either a good service or engine tune, do you just drive to about town, if so take it for good blow out up the motorway could clear levels.  :D

[muddyweb]

I always say...  fix the problem, not the symptom ;-)

[ian_s]

nah, cure enough symptoms and your gonna cure the problem eventually.
 :twisted:  :twisted:

hmmm, think i've sorted it anyway
wont know til i can MOT it again

i think it might have been a blocked crankcase breather pipe, which meant there was a little crankcase pressure. not much, but apparently that might have been enough to make some oil go up into the bores which then wasnt burning properly, causing unburt HCs in the exhaust