whats the lifespan of a cdi injector?

Discussion in 'Engine' started by guydewdney, Mar 12, 2015.

  1. guydewdney

    guydewdney Hardcore MB Enthusiast

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    Not fail, but poor performance? 200,000 miles on mine atm , one injector is reporting 'high back pressure' or something like that. I can get recon ones for 75 quid on the continent which is less than reconning mine....

    so, replace or waste of money? 32mpg on the pooter on rural roads. Feels 'weak' at the top end when thrashing it.
     
  2. WG M-B

    WG M-B Auhorised Forum Sponsor Authorised Forum Sponsor

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    So a couple of points pal....
    A recon is only as good as the company carrying out the refurb, so check before buying cheap crap :doh:

    Secondly, you should rename the thread. ..........
    How long does a Bosch injector injector last in a 613/648 engine

    Mb build the engine and it lasts forever if its looked after
     
  3. WG M-B

    WG M-B Auhorised Forum Sponsor Authorised Forum Sponsor

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    At 200 k you should look at getting a new set..
    From mb in my opinion!
    After all if the originals have lasted this long why wouldn't you?
     
  4. OP
    OP
    guydewdney

    guydewdney Hardcore MB Enthusiast

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    Because from merc at about 300 quid a pop (x6...), its going to take an awful long time to pay for its increased fuel economy. but your point is valid and correct.

    lets say, for arguments sake, it increases fuel economy by about 10%.

    i do 8 to 10k miles pa.
    at 32mpg thats 280 gallons or 1277 litres pa or £1480 pa at 1.159 a litre.

    so if its 10% better, then thats £1331 pa after. Or 150 quid. Or half one mb injector. So id need to keep it 12 more years to break even, not including labour. At 75 quid, assuming the same increase, it takes 3 years. Just about viable.

    Not a mod, so cant edit title. But again you are right.
     
    Last edited: Mar 12, 2015
  5. BlackC55

    BlackC55 Authorised Forum Sponsor Authorised Forum Sponsor

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    We have a car we look after 635,000 miles with original injectors.
     
  6. gazz

    gazz Hardcore MB Enthusiast

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    I have a customer with a E320 cdi W210 with 295,000 miles. Last week it was in for its first injector seal failure ever. If it ain't broke, don't fix it!
     
  7. jaymanek

    jaymanek Authorised Forum Sponsor Authorised Forum Sponsor

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    Never had a problem with new Bosch ones from aftermarket suppliers
     
  8. E270 Owner

    E270 Owner Hardcore MB Enthusiast

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    Always order injectors from engine numbers.

    Some car parts suppliers have had the wrong injectors listed due to Bosch
    messing around with superseded part numbers and incorrect engine numbers.

    A certain injector re-manufacturer sent me units that were hammering under full load due to this.
     
    Last edited: Mar 16, 2015
  9. theRéhann

    theRéhann New Member

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    I own a 2006 Audi Q7 3,0 TDi. There is a technical bulletin that says the injectors tend to fail from 50 000 km (31000 miles) onwards. And it will cost ZAR55 000 (about GBP3000) to replace all six.

    Such joy...
     
  10. Giantvanman

    Giantvanman Hardcore MB Enthusiast

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    They fit a sub-standard part that needs replacing after about three years and expect the customer to pay to rectify. Very shoddy. I'm not surprised though.
     
  11. automaniaman

    automaniaman Hardcore MB Enthusiast

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    Who knows, as they don't come with a "best used before date" on the packet...
     
    1 person likes this.
  12. gazz

    gazz Hardcore MB Enthusiast

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    ...unlike heater flap stepper motors, which do.
     
  13. panason1c

    panason1c Hardcore MB Enthusiast

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    Mine have all done 260k so far and never been touched, as said...if it aint broke.....
     
  14. jazzyglobe

    jazzyglobe Hardcore MB Enthusiast

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    Stick to using quality fuel and a dash of 2 stroke every fill up. Wack a can of BG244 through the system every few months. Should be fine.
     
  15. E270 Owner

    E270 Owner Hardcore MB Enthusiast

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    Anything I get my hands on.
    Make sure the 2 stroke oil is mineral and not synthetic
     

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