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How long should injectors last?

Discussion in 'GM 6.5 Diesel Engines' started by Drago, Dec 31, 2011.

  1. Drago

    Drago Member

    375
    0
    Oct 25, 2011
    Virginia
    are they like spark plugs? change them after so many miles before the give you trouble or do you wait for the smoke? Assuming regular fuel filter changes and steady diet of good fuel with the occasional cleaner, how long should they last? same question for glow plugs.
     
  2. DieselCash

    DieselCash Trust but, verify Staff Member Moderator

    6,266
    53
    May 29, 2008
    Salado, Texas
    You want to change them at about every 100,000 miles.

    I have not followed this regiment, mine have over 190,000 miles. :nonod:

    I need and want to change them out, just no money. :eek:
     
  3. Drago

    Drago Member

    375
    0
    Oct 25, 2011
    Virginia
    with the right tools it doesn't look that hard, I don't have a turbo in the way. maybe you can do two a payday
     
  4. DieselCash

    DieselCash Trust but, verify Staff Member Moderator

    6,266
    53
    May 29, 2008
    Salado, Texas
    Yeah, I need too. They are not hard, a lot of people on here have done it. Some more than once.

    Wish you luck! :thumbsup:
     
  5. WarWagon

    WarWagon Well it hits on 7 of 8...

    6,222
    402
    Nov 15, 2009
    AZ
    The injectors and glow plugs can fail at any time. The cheap Chinese cr@p only makes it 30K before they are all sticking open and making your engine hard to start. Towing hard is about 80K on OEM injectors and 100K is the suggested life. Beyond that, well, at 177K see the picture I have of a melted and seized piston that let the rod beat 4 holes in the bore. Got it cheap with a ruined engine and ruined turbo. I had to flush oil out of the radiator... Of course how much longer is the engine going to last with the crack prone castings?

    Glow plugs get checked before the cold season starts and rule of thumb is change the OEM ones out with injectors. There is no given service life on glow plugs although the factory ones tend to swell.
     
  6. Drago

    Drago Member

    375
    0
    Oct 25, 2011
    Virginia
    one of the problems of buying a used vehicle, I don't know if they got changed recently or not. I suppose I could call VDOT and see if they still have maintenance history on it. As I said before it starts right up, no smoke and gets the advertised 20 mpg. I'll wait for Spring, smoke or hard start, which ever comes first to change them.
     
  7. NVW

    NVW Well-Known Member

    7,520
    170
    May 5, 2008
    Castor, AB.
    If it starts with little smoke and runs well I'd say you're OK.
     
  8. DieselCash

    DieselCash Trust but, verify Staff Member Moderator

    6,266
    53
    May 29, 2008
    Salado, Texas
    That is what mine does when the motor is cold. :thumbsup:
     
  9. WarWagon

    WarWagon Well it hits on 7 of 8...

    6,222
    402
    Nov 15, 2009
    AZ
    Remove 2 injectors and take them to a local shop for testing. They will tell you by the spray pattern and pop pressures etc. what shape they are in.
     
  10. DieselCash

    DieselCash Trust but, verify Staff Member Moderator

    6,266
    53
    May 29, 2008
    Salado, Texas
    That is a good idea, I found a shop in Waco, TX that is about an hour away from the house.
     
  11. 4thesporty

    4thesporty New Member

    123
    0
    May 8, 2011
    DFW....Texas
    Marty,

    You can also try Trey's:

    2718 Lavendusky
    Temple, TX 76501

    I found this on the Stanadyne website's dealer locator. That's were I found a place up in Ft. Worth for mine.
     
  12. DieselCash

    DieselCash Trust but, verify Staff Member Moderator

    6,266
    53
    May 29, 2008
    Salado, Texas
    Thanks! :thumbsup:

    That is only a 20 minute drive.
     
  13. jmiller

    jmiller Recruit

    852
    2
    May 6, 2008
    Lake Villa, CRIL
    2x on 100K life time.

    But the only true measure is to have them tested. You really don't want to wait until they are peeing or have a bad spray pattern. (can make for expensive repairs)

    The cost to test them is way cheaper than the alternative. If your unsure of how old they are, take the drivers side out an have them checked.


    I highly recommend the push loc return lines. They last a long time and don't need the small clamps.
     

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