Year of Manufacture *: 2003 Engine Size and Code *: 2.7 ( Optional ) Scanner Used: Modis ( Optional) Fault Codes: None This was towed to a local garage with suspected run out of fuel. Garage put in a couple of gallon and changed the fuel filter, owner had been trying to bleed it at injector 1 and (luckily) found no fuel pressure I had about 10 codes with low pressure, injectors open, cmp open circuit, ckp/cmp coherence, glow plugs etc. Most look like they have been created by owner over the last week of "checking stuff" All clear except glow plug cylinder 3, and here is where it gets odd Live data all looks good on cranking except rail pressure reading is VERY high. It switches between 416 and 922 Bar on ignition and rises to 2010 on cranking. I know this is not possible so check scanner is set to Bar and not PSI, it isnt. I put a meter on sensor and on ignition it is reading .5volt which is about correct. live data says between 416 and 922. Out of interest I put on a signal generator at 1.2Vand crank. Live data says stupid pressure and engine doesnt fire. But in all of this the ECU has not flagged one code for over pressure?? I would like to put on a different scanner but it has the round diag socket and I only have a Modis that will connect to that Snapon dont know of any problems with this engine software and the Modis Any thoughts |
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Mercedes Sprinter 2.7 2003 - Fuel pressure reading # - Andy Broomhead February 6, 2015, 8:40 pm
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