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Old 02-18-2017, 11:51 AM
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Join Date: Feb 2017
Posts: 1
ML270 starting problem

Hi can anyone out there help me. I have an ML270 03 reg and recently I had an injector malfunction and replaced it and the other 4 so the problem did not reoccur. At the same time replaced all the glow plugs and it has started and run great until this morning,when it went to start but then changed its mind. Turned it off then over again but now won't start. Have checked the diesel line from rail to injector and no diesel is coming through. Have been told that the high pressure diesel pump has probably gone because the injectors have been replaced and are now working at the correct pressure it's probably blown the fuel pump because it can't handle the new pressure. Is this true or could it be another problem.

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Old 03-02-2017, 01:32 AM
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Join Date: Feb 2012
Location: Germany
Posts: 42

most likely you will have to replace the fuel supply lines.
That is a common problem as the plasic gets old and the O-rings wear out.

If you can see an air bubble in one of the hoses you know there is a leak.

Mercedes has a repair set wich contains all fuel supply lines including connectors for about 50-70$. You can´t fix that with a normal hose.

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