kendo
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| posted on 23/6/14 at 04:17 PM |
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MOT Failure - Headlight Pattern
I've just put my 7 through its first MOT and it failed on one of the headlights because it did not produce the correct pattern.
Rather bizarre I thought but the tester showed me and I had to agree. One headlight gave the familiar pattern but the other just produced a bright
spot. There is no discernable difference in how they look, there is no damage to the glass lens or reflector so I'm at a loss.
Incidentally it passed the SVA with these lights, but if I recall correctly the SVA tester glossed over that part (due to all the other problems most
probably!).
My conclusion is that the quality of the glass lens is the problem. I sourced the lights from SVC orginally many moons ago probably a couple of years
before I got it on the road (which was 2010) and it has been laid up for 2 years so there is no recourse there.
Anyway I have bought some new lamps to replace the originals but I can't seperate the lamp from the chrome ring. There are 3 wire clips that
hold the lamp in place but I can't figure out a way of releasing them.
Does anyone have any tips?
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loggyboy
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| posted on 23/6/14 at 04:19 PM |
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Was the bulb seated properly? Can give funny patterns if its too close to one of the reflectors.
EDIt - just realised the query is for new parts to replace these - to which I can offer no help.
Some pics might aid though?
[Edited on 23-6-14 by loggyboy]
Mistral Motorsport
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austin man
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| posted on 23/6/14 at 08:20 PM |
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I bought some lamps many moons ago I belive off SVC and the lens needed to be rotated 15 degrees to produce the beam pattern for the uk market. I do
think your problem is more likely to be
A bulb seated incorrectly
B. Bulb has been handled incorrectly ie glass has been touched
Life is like a bowl of fruit, funny how all the weird looking ones are left alone
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alfas
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| posted on 10/7/14 at 09:57 PM |
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once i bought cheapish (H4) bulbs, which also gave a strange pattern.
it turned out that the bulb was not correctly manufactured: the glas was not correctly aligned to the seat, it was rotated some degrees
buy cheap, buy twice!!!
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