ML270 CDI Help

[alan5251]

Hi, having just replaced the fuel filter and supply pipe on my Merc, I am now unable to start it, it cranks fine, battery is good, replaced glow plugs, is this system self bleed or is there a knack of doing it? I have noticed what appears to be a small plunger on top of the engine that is connected to that pipe but can't understand how it works as it doesn't appear to move, any ideas? Thanks

[charlie 777]

i work for merc main dealer,the bit on the fuel pipe u r on about does nothing,the fuel system is self bleading just keep cranking over it should start,if not fill fuel filter with fuel

[alan5251]

Well thanks for your help, but we have tried this unsuccessfully, we put a scanner on it , and it delivered various error codes, having cleared these, and replaceing the glow plugs (all found to be defective) , it has now gone off to the main dealer.

[Parrot of Doom]

Did you replace the o-ring on the filter?

As stated, keep cranking. It takes a long time to expel the air.

[alan5251]

yep we actually replaced the pipe because it was leaking so it did have new seals