bigeal 0 Posted December 17, 2009 My 205 Cti failed mot on emissions,I tried all the normal things air/fuel mix,injector cleaner,engine flush,it wont pass,runs beautifully,its a 309 1.9 engine Share this post Link to post Share on other sites
Anthony 1,003 Posted December 17, 2009 What were the results? CO and HC? Share this post Link to post Share on other sites
bigeal 0 Posted December 17, 2009 What were the results? CO and HC? hi Anthony ,CO level 9.84% FAIL HC level 1150 ppm Pass Share this post Link to post Share on other sites
Anthony 1,003 Posted December 17, 2009 They're both too high to be honest, assuming its a standardish engine. Should be around 1-1.5% CO and 200-400 HC really. If you've would the mixture screw out (anti-clockwise) on the AFM out with no success, then chances are that either the AFM or ECU temp sensor is shot. Probably best laying your hands on a known good AFM, and replacing the ECU temp sensor with a new one as they're only a tenner. However, seeing that you've got a 1.9 engine in what I assume was originally a 1.6 CTi - have you used the matching 1.9 ECU and AFM along with the engine? If you start mixing 1.6 and 1.9 fueling/management parts (ie injectors, AFM, ECU) then the fuelling it typically a fair way out, and certainly using 1.6 AFM/ECU and 1.9 injectors would make it run rich like yours is doing... Share this post Link to post Share on other sites
bigeal 0 Posted December 17, 2009 They're both too high to be honest, assuming its a standardish engine. Should be around 1-1.5% CO and 200-400 HC really. If you've would the mixture screw out (anti-clockwise) on the AFM out with no success, then chances are that either the AFM or ECU temp sensor is shot. Probably best laying your hands on a known good AFM, and replacing the ECU temp sensor with a new one as they're only a tenner. However, seeing that you've got a 1.9 engine in what I assume was originally a 1.6 CTi - have you used the matching 1.9 ECU and AFM along with the engine? If you start mixing 1.6 and 1.9 fueling/management parts (ie injectors, AFM, ECU) then the fuelling it typically a fair way out, and certainly using 1.6 AFM/ECU and 1.9 injectors would make it run rich like yours is doing... Thanks ,I will check that out,one thing the MOT tester checked it as a 1.6 ,he said it made no difference that it was a 1.9 Share this post Link to post Share on other sites
Anthony 1,003 Posted December 17, 2009 The limits for the MOT are the same for both a 1.6 and 1.9 - 3.5% CO and 1200ppm HC. However, if you mix and match 1.6 and 1.9 parts, the fuelling is wrong and that will have an impact on emissions. Share this post Link to post Share on other sites
mr_exe 1 Posted December 17, 2009 I'd suggest an oil change, if the cars has been running too rich then there will petrol in the oil. That should bring the HC's down. Share this post Link to post Share on other sites
bigeal 0 Posted December 17, 2009 I'd suggest an oil change, if the cars has been running too rich then there will petrol in the oil. That should bring the HC's down. Thank you,but I did flush the engine and replace the oil Share this post Link to post Share on other sites
