BenzWorld Junior Member
Date registered: Mar 2010
Vehicle: C Class Estate 270, ML 320 (previous;A-Class, C-Class 200k, CLK 320, SLK 350)
Location: Doncaster UK
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W203 2.7 CDI starting problem (2005)
I have had problems starting the car particularly if it is on a slope. Lots of messing around but everyone points towards air in the fuel line.
There are three fuel lines that go faulty, all in the engine bay and each cost about £30. The seals at the ends deteriorate so if your replacing do all three.
They are between the pump and filter etc
Two are dead easy to swap but one is a real sod of a job requiring the fuel pump to come off which is not hard to do just takes a bit of time. Instant starting has now returned.
MB part numbers are
612 070 33 32
612 070 32 32
612 070 31 32
Ps no need to bleed the system it does it itself.