Injectors

[Flashman]

My buddy with a Duramax had to replace all his injectors at 120,000 miles and got me worried - I have about 200,000 miles on my 2006 Dodge.

How long do injectors typically last and how does it differ by brand of truck?

[noteven]

Fordlover wrote:

Flashman wrote:
My buddy with a Duramax had to replace all his injectors at 120,000 miles and got me worried - I have about 200,000 miles on my 2006 Dodge.

How long do injectors typically last and how does it differ by brand of truck?

My buddies 2006 Cummins needed a tow and new injectors at 65K miles, a tip broke off of one. About 5 grand later, his "bullet proof" cummins was back on the road. I'm pretty sure they typically last longer than this though.

Did he have work done by Bullet Proof Diesel?

[Grit_dog]

^Nice story. Are you Fishes brother? Lol

[Fordlover]

Flashman wrote:
My buddy with a Duramax had to replace all his injectors at 120,000 miles and got me worried - I have about 200,000 miles on my 2006 Dodge.

How long do injectors typically last and how does it differ by brand of truck?

My buddies 2006 Cummins needed a tow and new injectors at 65K miles, a tip broke off of one. About 5 grand later, his "bullet proof" cummins was back on the road. I'm pretty sure they typically last longer than this though.

[Cummins12V98]

Run the smallest micron filter for that gen truck you can find it will serve you well.

[_40Fan]

Grit dog wrote:

1320Fastback wrote:
Good friend of mine had a injector crack on his LB7 and dealer quoted him $7,700 to change all 8. He ended up going to a non dealer mechanic who did the job for $4,400 with the injectors themselves being $1,200 of that cost.

I run 3 micron Baldwin filters on my truck and if I run waste motor oil it's filtered down to 2 micron before going in the tank.

There's no G in Cummins btw 😉

To bad he got hosed in injectors with the 3 grand in labor.
$1200 barely buys a set of injector cores.

I am guessing he has the labor/parts backwards.

[1320Fastback]

I got the ones for my 12V on Black Friday sale for $325.00 shipped... Didn't have the heart to tell him or that it only took 45 minuets to put them in and fired up.

[Grit_dog]

1320Fastback wrote:
Good friend of mine had a injector crack on his LB7 and dealer quoted him $7,700 to change all 8. He ended up going to a non dealer mechanic who did the job for $4,400 with the injectors themselves being $1,200 of that cost.

I run 3 micron Baldwin filters on my truck and if I run waste motor oil it's filtered down to 2 micron before going in the tank.

There's no G in Cummins btw 😉

To bad he got hosed in injectors with the 3 grand in labor.
$1200 barely buys a set of injector cores.

[1320Fastback]

Good friend of mine had a injector crack on his LB7 and dealer quoted him $7,700 to change all 8. He ended up going to a non dealer mechanic who did the job for $4,400 with the injectors themselves being $1,200 of that cost.

I run 3 micron Baldwin filters on my truck and if I run waste motor oil it's filtered down to 2 micron before going in the tank.

There's no G in Cummins btw 😉

[jerem0621]

Yea my dad has an 03 Cummings Ram and he recently had to replace all of his injectors. He is at about 230k miles. He said it really mad a difference in how the truck started and ran. I would start noodling some cash away for a new set. The way I see it, it's not if, it's when.

Thanks!

Jeremiah

[bucky]

The halo test works also. On a clean paper towel drip hot oil from the dipstick and wait a little bit. If there is raw fuel in the oil it will separate into an outer ring that looks like a halo.
If your oil level is increasing that's another indication of at least one bad injector. Replace them all, will run about $3K.
You are in the target mileage. (so am I)

[Grit_dog]

But at 200k you're probably on borrowed time if you only have OE filtration.
As mentioned though, if you don't have symptoms of leaking or high return rates you're still in good shape.

[KD4UPL]

I'll assume his Duramax was an LB7 made form 2001 to 2004.5. The eighth VIN digit will be a 1. These had lots of injector problems. GM eventually issued an extended warranty on the injectors.
I wouldn't relate his failure to your completely different engine.

[1320Fastback]

On high pressure common rails it will also dilute your oil thin enough to grenade your motor.

[boogie_4wheel]

Just watch for white smoke at idle, or immediately after a warm start. Caused by an injector dribbling fuel into a cylinder (not seating properly). A leaking injector can also burn the piston, so if you suspect leaking, pull them all and have them tested.

Extended cranking time can be caused by low batteries, but also because the injector return rate is too high and it cannot generate enough rail pressure to fire an injector. The computer requires more than 5k psi before it will start pulsing injectors. If fuel is being bled off by the injector, it will take longer cranking time to generate pressure, if it is achieved at all.

If you don't have white smoke, long cranking times, or shaking/loping at idle, don't worry about it.