Hi Guys
I have a DL LTD and a little while ago I had the injectors / manifolds cleaned before this I was getting around 11.5 l/100Km around the city and about 7.2 l/100Km on the highway now it's up to 13.8 for city and 10 on the highway. also the idle has gotten significantly rougher. A friend of mine suggested that changing the Oxy sensor might put things right, engine temp is unchanged and everything seems to be running as it should, as this has only happened after the injectors were cleaned I was wondering if the solvents used in this process may have damaged the sensor in some way or left some residue on it that affects the readings. Would appreciate your thoughts on this.