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Old 14-03-2005   #1
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High co emissions...failed mot

I have a 55s 1.1 and it failed its mot on the co emissions test and exhaust front pipe. The guy at the garage said that getting a new exhaust front pipe would sort the problem but its made it worse. The sheet says that the lambda is okay what else can it be???? Will getting it tuned help???

FAST IDLE TEST
ENGINE SPEED =2450RPM
CO LEVEL =1.60% (MAX IS 0.30%) FAIL
HC LEVEL =123PPM
LAMBDA =1.00

SECOND FAST IDLE TEST
ENGINE SPEED =2833
CO LEVEL =1.47% FAIL AGAIN
HC LEVEL =65PPM
LAMBDA =1.01

NATURAL IDLE TEST
ENGINE SPEED =818
CO LEVEL =0.29 WHY DOES CO LEVEL PASS THIS TIME?
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Last edited by sr3309; 14-03-2005 at 19:10.
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Old 24-05-2006   #2
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Re: High co emissions...failed mot

I've got exactly the same problem and we can't find the fault either
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Old 24-05-2006   #3
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Re: High co emissions...failed mot

air leak in exhaust system or too big a bore exhaust fitted
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