![]() EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. My neighbour went back to the garage who carried out the work and at my suggestion they have discovered metal filings in the fuel filter.Įxhaust Gas Recirculation EGR is a NOx (nitrogen oxide and nitrogen dioxide) reduction technique used in most gasoline and diesel engines. Re: Programming diesel injectors Just to update this thread. Any useful comments would be appreciated. Personally I suspect a dirty valve as the engine was emitting black smoke before the injectors were changed. Otherwise the engine is running perfectly although it hasn't had a long run as yet. What I need to know is will the throw a fault if the injectors aren't programmed. His car has been running for two days now only covering about 10 miles and he is now getting an intermittent fuel injection warning light. During similar work in the past I have always had similar injectors programmed in to the. Apparently the injectors were just changed over and the engine ran OK but the garage stated they don't need programmed. My neighbour has just had four new replacement injectors fitted at an independent garage. ![]()
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