fuel pressure

  1. R

    CDI 220 W203 Difficult to start.

    2003 W203 has become difficult to start, the colder it gets or the longer i leave it between starting the more difficult it is to start. Until very recently there have not been any fault codes, then a couple of days ago after being particularly difficult to start, I ended up having to crack...
  2. T

    Crank, no start. Not getting enough fuel

    Hi, I just completed a head gasket replacement on my 1994 e320 m104. Put everything back together and it wouldn't start. I have narrowed it down to lack of fuel. If i cover the air intake in front of the MAF sensor, it turns over and tries to start but fails, or starts but immediately stalls...
  3. F

    Fuel Pressure Way Too High

    I'm looking for some advice please. I have a 2007 Viano 3.0 CDI. I have an engine warning light displayed and have most of the time much reduced power (especially when hot and when the auto gearbox changes down). I am told that the fuel pressure is normally around 260 bar, however two mechanics...
  4. SteveB73

    CLK 270cdi. Low fuel pressure

    Hi all, My CLK broke down last week on way to work. Engine just stopped coming off a roundabout. AA arrived and when plugged in it was showing 20bar in the fuel rail. The guy suggested that it was the low pressure pump which I have changed, and after much cranking rail is still only reading 20...
  5. mshah70

    W211 low fuel pressure under hard acceleration star code 22e7

    Hello Owner of merc w211 e220 Cdi 2007 226k I am having low fuel pressure issues. Star diagnostic code 22e7 Check high pressure control ‘rail pressure too low’ When i open up the throttle (hard acceleration) going up a hill or on motorway, the engine light comes on and car goes into limp...
  6. mshah70

    W211 low fuel pressure under hard acceleration star code 22e7

    Hello Owner of merc w211 e220 Cdi 2007 226k I am having low fuel pressure issues. Star diagnostic code 22e7 Check high pressure control ‘rail pressure too low’ When i open up the throttle (hard acceleration) going up a hill or on motorway, the engine light comes on and car goes into limp...
  7. mshah70

    W211 low fuel pressure under hard acceleration star code 22e7

    Hello Owner of merc w211 e220 Cdi 2007 226k I am having low fuel pressure issues. Star diagnostic code 22e7 Check high pressure control ‘rail pressure too low’ When i open up the throttle (hard acceleration) going up a hill or on motorway, the engine light comes on and car goes into limp...
  8. N

    ML270 engine won't start

    Hi, we own an ML270 CDI yr 2004. We started having problems (difficulty to start & then stalling while decelerating). Once, after stopping for a break on a long journey, it took 20 mins to start. We then took it to a Mercedes Benz dealer for servicing & to review the problem. It came up with...
  9. E

    Help PLEASE, DPF problems maybe

    Hi all, I'm at a bit of a loss at the moment, both financially and mentally; not to mention emotionally drained. I own a Mercedes C250 Efficiencyblue 2.2 CDI A brief run down of problems: 1. Car starts to crank for long periods in the morning before starting, but starts. 2. One...
  10. J

    om642 320 cdi fuel rail sensor location

    Afternoon all, could anyone help me with the location of the fuel rail sensor location? Part number is Bosch 0281002504 - it also fits lots of VAG models Mercedes ref is A0041536728 Also the location of the pressure control valve if possible - Mercedes ref A6420740184 I have fault...
  11. B

    2003 Sprinter 311 cdi - engine cuts out whilst driving and some problems starting

    Hi all, I having a problem with my 2003 Sprinter 311 cdi that seems to crop up on this forum and others. The main issue is that the engine will cut out whilst driving - usually after having driven the van for while that day (i.e. the engine is warm). When the problem occurs i have to pull...
  12. C

    Low fuel pressure "HELP"

    Hi every1, I have a 2010 E200 sport saloon and the engine management light has been coming on and off quite regularly and the car goes into limp mode, I took it to my mechanic and he put it on the computer and it says there's a fault 'low fuel pressure' we changed the filter and still the same...
  13. C

    Problem after getting mafs repaired!?

    Hi guys, Recently had my maf sensor repaired by ecu testing in extremely quick time (highly recommended) as the car couldn't build up revs to leave first gear and diagnostics showed maf fault. Anyway put the maf back in today and had the bad/esp fault light as they said it would so got it...


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