E320 CDI wont start after injectors out.

Discussion in 'Engine' started by Striker99, Apr 8, 2015.

  1. Striker99

    Striker99 Member

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    Hopefully I am posting this in the right place. I'm new here today, looking for any ideas / help as getting very frustrated with my E320 CDI engine.

    1. Have removed two injectors to fit new seals.
    2. Bought injector puller from ebay, pulled injector out but made hole in rocker box cover !
    3. Lost tiny ball bearing from inside of injector.
    4. Bought replacement injector and fitted. filled hole in rocker box cover.

    Now engine shows no sign of firing at all. Any ideas please on why this might be ?

    thanks in advance from thoroughly frustrated, Essex !!
     
  2. bob6600

    bob6600 MB Club Veteran

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    providing all is connected back up correctly, it will fire up eventually

    If it's a W211 then you will need to get the injector coded

    Out of interest, what did you fill the rocker cover with?
     
  3. OP
    OP
    Striker99

    Striker99 Member

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    Thanks for your quick reply.

    I believe its a W210 E320 CDI Saloon 2001.

    Filled the hole in the rocker cover with fiberglass type filler.

    Would the injector not being coded, stop the car starting ? I'm not a mechanic so not sure what that entails. I thought Id try and ask for help here then pass it on to my more mechanical friend in the morning.
     
  4. Auto-mobile

    Auto-mobile Hardcore MB Enthusiast

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    The only reason it won't start is a faulty new injector or the connector isn't on properly.
     
  5. a111r

    a111r Hardcore MB Enthusiast

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    With no signs of firing, I'd say you still have air in the fuel system.
    It can take a strong battery for it to all bleed out...
     
  6. OP
    OP
    Striker99

    Striker99 Member

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    Thanks for the advice. The battery was weak, so I left it on charge for the night. Fingers crossed for the morning. I'll let you know how I get on.
     
  7. E270 Owner

    E270 Owner Hardcore MB Enthusiast

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    Not all W211 CDI injectors are coded, if they have a number 4 inside a ring on top of the injector they don't need coding.

    :thumb:
     
    Last edited: Apr 8, 2015
    1 person likes this.
  8. bob6600

    bob6600 MB Club Veteran

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    Always learn something new on here :) Thanks for the correction.

    @OP

    as it's a W210, no coding is needed. You should find with a strong battery it should fire up eventually
     
  9. alexanderfoti

    alexanderfoti Hardcore MB Enthusiast

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    You will likely need to crank for 25+ seconds to get it started.
     
  10. mersum1es

    mersum1es Hardcore MB Enthusiast

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    As above, if return hoses and o-rings are ok. When they have been changed, is there air bubbles in those /clear lines)? If not changed and you managed to disturb them during injector repair, you may have caused new air leak there and now it cannot produce enough fuel pressure.
     
  11. OP
    OP
    Striker99

    Striker99 Member

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    Latest update. The engine started with a good crank over but was running on 5 cylinders. Injector 3 didn't appear to be firing. We have had this injector apart so we dismantled it again and made sure everything looked correct. Now the engine shows no sign of firing again !!! Can anyone tell me is there any way of telling if the injector cap is receiving the correct electrical signal to make it fire ? Any other advice please ? Thanks Kev
     
  12. E270 Owner

    E270 Owner Hardcore MB Enthusiast

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    Sometimes .......... once taken apart they need re-calibrating.
     
  13. BlackC55

    BlackC55 Authorised Forum Sponsor Authorised Forum Sponsor

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    I would do a leak off test.
     

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