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Topic: Failed MOT on emissions, can anything be done ? (Read 543 times) |
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adwozere
Newbie
Scorpio 2.3i Ghia
Posts: 35
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Failed MOT on emissions, can anything be done ?
« on: Jul 31st, 2009, 1:51pm » |
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Hi
I have a Scorpio 2.3 Ghia 16v Auto 1996 (P reg)
Ive never had any problems with the emission test before in the mot test as its always gone though easy, in the 7 years Ive had the car.
But this time we did not have the money to put it in for MOT and the car stood on a hard stand for 7 months,
But when I took it for The MOT it failed on -
Exhaust emissions cabon monoxide content after 2nd fast idle excessive [7.3.2b]
AND
Exhaust emissions Lambda reading after 2nd fast idle outside specified limits [7.3.2b]
Fast idle -
CO < - 0.30 Actual - 7.67 [%vol}
Funny sign 0.97 - 1.03 Actual - 0.792
2nd fast idle-
CO <- 0.30 Actual - 2.03 {%vol}
Funny sign 0.97 - 1.03 Actual - 0.938
Natural Idle Test -
CO <- 0.5 Actual - 2.46 [%vol]
As you can see these are very high levels from being ok, the car runs well and dose not smoke.
Is there any thing I can do to get these levels down ? what would cause such levels.
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Snoopy
Administrator
Very old.BAD tempered and missing friends.
Posts: 6278
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Re: Failed MOT on emissions, can anything be done
« Reply #1 on: Jul 31st, 2009, 4:00pm » |
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When you took it for its test was it really HOT?
Its always worth giving the car a good HARD run at top speed in a lowish gear for a few moments to get the cat really hot and clean itself up.
Other than that I think its a new cat if that doesn't cure the problem.
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NormanHall
Junior Member
Scorpio-itis
Posts: 84
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Re: Failed MOT on emissions, can anything be done
« Reply #2 on: Jul 31st, 2009, 5:42pm » |
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Use a bottle of Forte additive in the fuel, it will bring the emissions into line in under half an hour. This is what most MoT centres do and then charge you for some magical work they haven't done.
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Gazza_UK
Full Member
2.3 Ultima auto :-)
Posts: 166
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Re: Failed MOT on emissions, can anything be done
« Reply #3 on: Jul 31st, 2009, 11:09pm » |
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tlundkvi
Full Member
Ex. Scorpio 2.9 24V -95
Posts: 909
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Re: Failed MOT on emissions, can anything be done
« Reply #4 on: Aug 1st, 2009, 8:19am » |
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You can take your chances with Forte (I did it even twice). It probably helped the engine, but I still needed to replace both cats. If you add it, add it to 1/4 full and drive in only low gears (1& 2). But don't have too high hopes with the stuff. A new cat is around 100£+work and a bottle of Forte probably 20.
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adwozere
Newbie
Scorpio 2.3i Ghia
Posts: 35
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Re: Failed MOT on emissions, can anything be done
« Reply #5 on: Aug 2nd, 2009, 11:09am » |
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Hi
Thanks I will give Forte a go.
Ive also checked all the vaccum pipes and found the one going across the top of the engine split, also checked all the electrical conections and found a few that have a bit of corrosion, from where it had been standing for a while.
The thing that gets me the car runs so sweet and never smokes.
Ive seen a few different types of forte dose it matter which one ?
FORTE ADVANCED FORMULA PETROL FUEL TREATMENT
Forte Specialist Car Fuel Petrol Injector Cleaner 400ml
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harry.m1byt
Full Member
What's YaBB?
Posts: 792
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Re: Failed MOT on emissions, can anything be done
« Reply #6 on: Aug 2nd, 2009, 2:57pm » |
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I used STP injector cleaner for petrol and it worked fine and boosted the MPG dramatically - I'm now seeing as good or better figures than in the book. It cost around £7-50 for four doses, one dose recommended per service to a tankful of petrol.
As others have said, give the car a good thrashing before taking it in.
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August '95 2.9 12v auto Ultima -
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