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 Posted: Thu Jan 17, 2013 5:07 pm |
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Joined: Sep 12, 2012
Posts: 383
Trade Rating: +3
Location: Flintshire, North Wales
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not too bad as i can sort these out but its just my emissions im worried about, firstly of all it failed on -
- nearside headlamp aimed too high
- exhaust noise is clearly in excess of that emitted by a similar vehicle fitted with a standard silencer in average condition
-windowscreen sticker (my sunstrip) or other obstruction encroaching by more than 10mm with zone A
-windowscreen sticker or other obstruction encroaching into the swept area by more than 40mm outside zone A
- nearside side repeater incorrect collour
now this is what im worried about and need advice please as i dont understand it, but the mechanic said that my exhaust was so big it was sucking in oxygen !? 
fast idle test - failed
engine speed 2500 - 3000rpm - not checked
co =< 0.30% 0.52% - fail
hc =< 200ppm 126ppm pass
wierd symbol i can put :S like an upside down 'Y' 0.97 - 1.03 1.048 - fail
second idle test: fail
engine speed 2500 - 3000rpm - not checked
co =< 0.30% - 0.33% = fail
hc =< 200ppm 91pmm - pass
(upside down Y) - 0.97 - 1.03 1.052 - fail
natural idle test - fail
engine speed 450 - 1500rpm not checked
co =< 0.50% 0.71% fail
advice please? bit of a dragging topic -.-
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Posted: Thu Jan 17, 2013 5:11 pm |
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Joined: Feb 07, 2010
Posts: 309
Trade Rating: +3
Location: Pontypridd
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Do you still have the standard box? To get it through the MOT?
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| 1997 106, 2002 206 LX 1.4, 2004 GTHDI,
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Posted: Thu Jan 17, 2013 5:19 pm |
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Joined: Sep 12, 2012
Posts: 383
Trade Rating: +3
Location: Flintshire, North Wales
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yeah mate i got the standard back box, do u think this will pass me through the emissions test?
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Posted: Thu Jan 17, 2013 5:34 pm |
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Joined: Feb 07, 2010
Posts: 4455
Trade Rating: +1
Location: Essex
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I don't think the back box will have any effect on the emissions. A good thrashing before the MOT to warn the cat up might help though.
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Posted: Thu Jan 17, 2013 5:38 pm |
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Joined: Sep 12, 2012
Posts: 383
Trade Rating: +3
Location: Flintshire, North Wales
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ahh il try that aswel, i left it for hour hour there in the cold before mot, any else suggestions?
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Posted: Thu Jan 17, 2013 6:01 pm |
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Joined: Feb 07, 2010
Posts: 1645
Trade Rating: 0
Location: Chasing Ash, Addaz and Lee........... hopefully catching Addaz and havin fun :P
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Put some "wynns pre MOT" or "Wynns emmisions reducer" in your fuel tank and give the carr a good hard drive
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| 4.0 V8 S-Type Jaguar
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Posted: Thu Jan 17, 2013 6:56 pm |
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Joined: Sep 12, 2012
Posts: 383
Trade Rating: +3
Location: Flintshire, North Wales
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Posted: Fri Jan 18, 2013 3:02 am |
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Joined: Feb 07, 2010
Posts: 3935
Trade Rating: +84
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You get much better chemicals to reduce emmissions in SHELL performance petrol, So fill up with that and get the car nice and hot for the re-test.
Part from that its a cheap fix for the car to have another year on the road.
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Posted: Fri Jan 18, 2013 5:33 pm |
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Joined: Feb 07, 2010
Posts: 1645
Trade Rating: 0
Location: Chasing Ash, Addaz and Lee........... hopefully catching Addaz and havin fun :P
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THATS THE STUFF!!!! Shove some of that in, run it through and watch it pass 
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| 4.0 V8 S-Type Jaguar
Image removed due to size | |
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Posted: Sun Jan 20, 2013 5:24 am |
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Joined: Jan 07, 2012
Posts: 111
Trade Rating: 0
Location: Fife
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What he may mean, as I had this before with a blitz system is that when they put the probe up the exhaust it can only reach so far. If the bore is too large then the gasses swirling out can also cause some normal air to enter the exhaust enough to interfere with the testers probe. If you could insert the probe further the problem would go away. But you cant. So reducing the bore size by fitting the old backbox should see it pass.
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Posted: Sun Jan 20, 2013 6:49 am |
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Joined: Feb 07, 2010
Posts: 7093
Trade Rating: +11
Location: Suffolk
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Or does he mean there is a leak in the exhaust system? Causing on the negative exhaust waves to draw in sed oxygen to throw out your emissions?
Had a bit of a giggle on the fact its too loud, at 107DB i still pass because its a subaru impreza
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