phil l.a. 
Member 
 
Registered: 8th Oct 04
 
User status: Offline 
 
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Hi 
I have a 1993 1200 Corsa. Its in good order except has just failed the MOT on emissions - it passed the natural idle but failed fast idle with high CO and HC but low lander. The readings were... 
 
Engine oil temp 80 (OK - on the limit)  
 
CO (top limit 0.3%) 2.96% (1st test) 9.74% (2nd test) 
HC (top limit 200ppm) 301ppm (1st) 511ppm (2nd) 
lander (bottom limit 0.97) .909 (1st) .789 (2nd) 
 
I would be really grateful for any advice on how to get it through. 
Cheers 
Phil
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PaulW 
Member 
 
Registered: 26th Jan 03
 Location: Atherton, Greater Manchester 
User status: Offline 
 
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if you have an induction kit, remove it & fit standard box/filter. 
 
also could be a sign the lamba sensor is buggered and/or possible cat failure...
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greengoddess 
Member 
 
Registered: 17th Jun 03
 Location: Northern Ireland, formerly Enfield North London 
User status: Offline 
 
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Try getting it crypton tuned as this is usually down to being out of tune/ faulty parts on ignition system or could be lambda sensor as said above.Shouldn't cost too much for a tune up either and they usually fit any parts that are faulty at the time 
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MJ 
Member 
 
Registered: 18th Sep 03
 Location: Hampshire Drives: ITR DC2 + Skoda Felicia 
User status: Offline 
 
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throw a bottle of this in http://www.camskill.co.uk/products.php?plid=m1b13s26p54&tbv=FORTE_GAS_TREATMENT_Accessories_&_Misc_Parts_Fuel,_Engine,_Anti_Freeze_&_Other_Additives and it should then pass, u can get it from vauxhall and its wot they use to make cars pass an emissions test. 
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damocorsa 
Member 
 
Registered: 8th Nov 03
 Location: N Wales 
User status: Offline 
 
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Mine was doin the exact same thing. I bought some of that Forte injector cleaner and it passed.
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