P00871 code w212 e250 cdi om651,

[jayy]

Ok guys, under load and hard acceleration I'm getting a p008791 code, low fuel pressure bank 1, eml and limp, but when I turn key one and off the limp goes but eml stays on. I've had a new fuel filter, had a new boost pipe not long ago, full diagnostic shows no issues, regens without a problem, I understand fuel filters where a pain on there models, not can anyone shed any light on what I should potentially be looking at? Thanks

 

[OneForTheRoad]

Did it do this before the fuel filter change ?

 

[jayy]

Yes mate, nut filter was a Crossland, merc filter in and its still doing it, seems to be when the engine is out under load ie on an incline doing 40 in "E" mode, I push acceleration but before it kicks down the engine seems to labour and then goes into limp, giving me the low fuel pressure code. I'm due to drive to Italy in 3 weeks, 3k trip, and I'm struggling to find a merc specialist who can fit it in and get it on star withing the time frame, so any suggestions would definitely be appreciated