murtu Posted March 16, 2011 Report Share Posted March 16, 2011 when going to get the car renewal the was a fault with the exhaust but i am not sure what is the issue as i didnt see any smoke coming from the car nor any visible signs of engine failure so why did the wright that Link to comment Share on other sites More sharing options...
johnbimmer Posted March 20, 2011 Report Share Posted March 20, 2011 Its the level of HC (Hydro Carbon) they check, your must be old or high km engine, its quite common. If not then your engine must have been abused with late oil change many times to have high HC count. Link to comment Share on other sites More sharing options...
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