Matt865 Posted June 7 Share Posted June 7 Greetings, I am now facing a severe fuel leakage problem with my e87 120d m47d20. Initially, the issue was little, so I neglected it. However, it has now escalated to a significant extent. Could you maybe provide guidance on where to begin investigating the source of this leak? Based on the significant quantity of leakage, I presume that the issue is related to a hose. I have included a video clip showing the leakage from underneath the vehicle. Quote Link to comment Share on other sites More sharing options...
Matt865 Posted June 7 Author Share Posted June 7 Quote Link to comment Share on other sites More sharing options...
Blu_Ray_UK2007 Posted June 7 Share Posted June 7 Have you removed the engine cover and inspected the fuel return pipes on the injectors? The video does not provide enough information to determine the location, thus it is advisable to inspect the engine compartment with the lid off. Quote Link to comment Share on other sites More sharing options...
Matt865 Posted June 7 Author Share Posted June 7 Indeed, I have inspected the engine compartment with the hood off. My vision was completely impaired. Are there any concealed gasoline pipelines located at the rear of the engine? Because I have a hunch that it is located someplace in the rear of the engine, but I am hesitant to remove the manifold without knowing the specific location and purpose of what I am searching for. An illustration depicting the arrangement of gasoline pipelines in the engine compartment would be beneficial. Thank you. Quote Link to comment Share on other sites More sharing options...
WordSmith Posted June 7 Share Posted June 7 Verify this information on the RealOEM website... Regarding my vehicle, namely a BMW E46 320CD from the 55 registration plate. The image is resized, but it should be imported into a photo editor to accurately locate the position of the pipes. Quote Link to comment Share on other sites More sharing options...
Matt865 Posted June 7 Author Share Posted June 7 Indeed, that is very beneficial. I will start an investigation and provide you with updates. I am optimistic about locating a leak. Quote Link to comment Share on other sites More sharing options...
Matt865 Posted June 7 Author Share Posted June 7 I have identified the source of the leak.The specific region shown in the image will not be dismantled today due to it being Sunday, and the unavailability of necessary components. Additionally, I am required to attend work tomorrow. I have reason to believe that there may be a leak either from the gasoline return line or the pressure regulating valve. I have also attached a diagnostic kit and all fuel pressure readings seem to be within acceptable limits. The fuel pressure reaches the desired pressure level. I am optimistic that it will be the gasoline line for the return journey. I will inform all of you promptly after I have resolved the matter. Thank you. Quote Link to comment Share on other sites More sharing options...
Blu_Ray_UK2007 Posted June 7 Share Posted June 7 I'm pleased that you were able to locate it. Quote Link to comment Share on other sites More sharing options...
WordSmith Posted June 7 Share Posted June 7 Esteemed individual. 😉 Quote Link to comment Share on other sites More sharing options...
Matt865 Posted June 7 Author Share Posted June 7 I have successfully resolved the issue. The source of the leak was identified as the high pressure fuel line labelled as number 16 in the attached picture, highlighted in yellow. This issue occurred due to repeated installation and removal of the fuel line, which is known to cause problems. The flange of the fuel line becomes flattened over time, resulting in an inadequate connection. Consequently, a replacement pipe had to be ordered. Please note that only the primary dealer can provide it, at a minimum cost of £33 in the UK. The issue with gasoline consumption has been resolved and is now back to its usual level. Thank you to everyone for your contributions. Hopefully, this will assist anybody facing a similar issue. Secure Quote Link to comment Share on other sites More sharing options...
Blu_Ray_UK2007 Posted June 7 Share Posted June 7 👍😊 Quote Link to comment Share on other sites More sharing options...
Matt865 Posted June 7 Author Share Posted June 7 😇 Quote Link to comment Share on other sites More sharing options...
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