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Thread: How long should injectors last?

  1. #1
    Registered User Drago's Avatar
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    Default How long should injectors last?

    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.
    '95 GMC 1500 P/U 6.5L NatAsp automatic trans OBD I former VaDOT truck 140K regularly serviced and lightly used, wasn't use for towing. pretty much stock. Have three kids, four GermanShepherds, train my own personal protection dogs.

    93 Mercedes 300D TD 2.5L POS

  2. #2

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    You want to change them at about every 100,000 miles.

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

    I need and want to change them out, just no money.
    Marty

    2010 Chevrolet Tahoe LT

    1993 Chevrolet C3500 Crew Cab Dually, 2WD, NV4500. GM-8 with Turbo Master, 4" exhaust with 2 1/4 crossover, Walbro FRC-10-2, and pre-lift pump filter. Auto Meter Phantom fuel pressure, EGT, Boost, Transmission, and Rear Differential Gauges. Mag-Hytec rear diff cover. Filter-Mag RA365 on oil filter. PTW Battery Cable Kit. Fumoto Oil Valve. Feed The Beast Mod. K47!

    1995 Lance 990 Extended Cab(Under Construction!)


    Veterans of America Club, member #13.

  3. #3
    Registered User Drago's Avatar
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    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
    '95 GMC 1500 P/U 6.5L NatAsp automatic trans OBD I former VaDOT truck 140K regularly serviced and lightly used, wasn't use for towing. pretty much stock. Have three kids, four GermanShepherds, train my own personal protection dogs.

    93 Mercedes 300D TD 2.5L POS

  4. #4

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    Quote Originally Posted by Drago View Post
    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
    Yeah, I need too. They are not hard, a lot of people on here have done it. Some more than once.

    Wish you luck!
    Marty

    2010 Chevrolet Tahoe LT

    1993 Chevrolet C3500 Crew Cab Dually, 2WD, NV4500. GM-8 with Turbo Master, 4" exhaust with 2 1/4 crossover, Walbro FRC-10-2, and pre-lift pump filter. Auto Meter Phantom fuel pressure, EGT, Boost, Transmission, and Rear Differential Gauges. Mag-Hytec rear diff cover. Filter-Mag RA365 on oil filter. PTW Battery Cable Kit. Fumoto Oil Valve. Feed The Beast Mod. K47!

    1995 Lance 990 Extended Cab(Under Construction!)


    Veterans of America Club, member #13.

  5. #5
    Well it hits on 7 of 8... WarWagon's Avatar
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    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.
    Not enough room in sig for all the stuff I have that LeroyDiesel.com sells.

    2003 Dodge Ram 3500 SLT QC LB HO Cummins 6 speed handshaker w/ Pacbrake. Factory 3rd pedal anti theft.

    1993 Chevy "Patch" K2500 6.5 Diesel LB project beater... Now a 6.2 re-power w/6.5 NA heads. Gapless rings. Walbro FRB-5. A-Team Turbo. ARP head studs. 6 banger Trans tune chip I think I have changed, replaced, or tightened every bolt and nut on this thing!

  6. #6
    Registered User Drago's Avatar
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    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.
    '95 GMC 1500 P/U 6.5L NatAsp automatic trans OBD I former VaDOT truck 140K regularly serviced and lightly used, wasn't use for towing. pretty much stock. Have three kids, four GermanShepherds, train my own personal protection dogs.

    93 Mercedes 300D TD 2.5L POS

  7. #7
    Registered User NVW's Avatar
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    If it starts with little smoke and runs well I'd say you're OK.
    Leo
    * 95 GMC 3500 4x4 dually, VIN "F", 4.10 gears, 4L80/E trans, 405,000km, 3" downpipe, 4" exhaust, FSD mounted on heat sink in bumper, #9 resistor, 3 pillar gauge's, High Idle kit, Bosch marine injectors, Bosch Duraterm glow plugs, Leroy's ATT chip, ATT, GP overide, K47 airbox, FTB, Racor fuel filter, fuel pressure gauge
    * 98 Chev. 1500 4x4 VIN "S", 3.73 gears 250,000 km, (needs work)
    * 97 GMC C3500 VIN "F", 4.10 gears, 5 spd manual, 324,000 k (parts)
    * 04 Yukon Denali, 6.0, 196,000 km.
    * GMTD ScanTech
    * CarCode

  8. #8

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    Quote Originally Posted by NVW View Post
    If it starts with little smoke and runs well I'd say you're OK.
    That is what mine does when the motor is cold.
    Marty

    2010 Chevrolet Tahoe LT

    1993 Chevrolet C3500 Crew Cab Dually, 2WD, NV4500. GM-8 with Turbo Master, 4" exhaust with 2 1/4 crossover, Walbro FRC-10-2, and pre-lift pump filter. Auto Meter Phantom fuel pressure, EGT, Boost, Transmission, and Rear Differential Gauges. Mag-Hytec rear diff cover. Filter-Mag RA365 on oil filter. PTW Battery Cable Kit. Fumoto Oil Valve. Feed The Beast Mod. K47!

    1995 Lance 990 Extended Cab(Under Construction!)


    Veterans of America Club, member #13.

  9. #9
    Well it hits on 7 of 8... WarWagon's Avatar
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    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.
    Not enough room in sig for all the stuff I have that LeroyDiesel.com sells.

    2003 Dodge Ram 3500 SLT QC LB HO Cummins 6 speed handshaker w/ Pacbrake. Factory 3rd pedal anti theft.

    1993 Chevy "Patch" K2500 6.5 Diesel LB project beater... Now a 6.2 re-power w/6.5 NA heads. Gapless rings. Walbro FRB-5. A-Team Turbo. ARP head studs. 6 banger Trans tune chip I think I have changed, replaced, or tightened every bolt and nut on this thing!

  10. #10

    Default

    Quote Originally Posted by WarWagon View Post
    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.
    That is a good idea, I found a shop in Waco, TX that is about an hour away from the house.
    Marty

    2010 Chevrolet Tahoe LT

    1993 Chevrolet C3500 Crew Cab Dually, 2WD, NV4500. GM-8 with Turbo Master, 4" exhaust with 2 1/4 crossover, Walbro FRC-10-2, and pre-lift pump filter. Auto Meter Phantom fuel pressure, EGT, Boost, Transmission, and Rear Differential Gauges. Mag-Hytec rear diff cover. Filter-Mag RA365 on oil filter. PTW Battery Cable Kit. Fumoto Oil Valve. Feed The Beast Mod. K47!

    1995 Lance 990 Extended Cab(Under Construction!)


    Veterans of America Club, member #13.

  11. #11
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    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. #12

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    Quote Originally Posted by 4thesporty View Post
    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.
    Thanks!

    That is only a 20 minute drive.
    Marty

    2010 Chevrolet Tahoe LT

    1993 Chevrolet C3500 Crew Cab Dually, 2WD, NV4500. GM-8 with Turbo Master, 4" exhaust with 2 1/4 crossover, Walbro FRC-10-2, and pre-lift pump filter. Auto Meter Phantom fuel pressure, EGT, Boost, Transmission, and Rear Differential Gauges. Mag-Hytec rear diff cover. Filter-Mag RA365 on oil filter. PTW Battery Cable Kit. Fumoto Oil Valve. Feed The Beast Mod. K47!

    1995 Lance 990 Extended Cab(Under Construction!)


    Veterans of America Club, member #13.

  13. #13
    Recruit jmiller's Avatar
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    Default

    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.
    John

    2007 K2500 4x4 - Silverado Classic Ext Cab 6.0L gas
    1998 K2500 4x4 - Cheyenne Long Bed, SCRAPPED
    6.2 / 6.5L Repower ceramic coated pistons, std compression ( Broken main cap bolts / main webs cracked)
    Stock 6.5 - 168,000 mi - Loose Balancer, Broken gear case, Broken Crank, Broken block - #2 main journal {6.5 Carnage (pictures link)}
    1986 1200 Goldwing Aspencade - Silver (WRECKED - a victim of lustful actions by a Honda Accord) {Historical record}
    1998 1500 Goldwing SE - Black

    Work hard - Play Harder

    CRIL - Communist Republic of Illinois

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