Reconditioned injectors.

[Aaron31]

Hi all - I'm pondering the idea getting some re-co injectors - given the ones in it currently are >200,000kms.
One thing that sprung to mind is how/if the unique that are on each injector are still valid if an injector has been reconditioned??

I am working on the basis that those numbers fairly accurately and specifically describe the injectors - for things like how long it takes it to turn on and off, and how much fuel is delivered given a specific pressure - so that that the ECU can then adjust itself accordingly. My thinking is all that would change if they are reconditioned - OR are those numbers recalculated??

Has anyone asked the same question and got a good response? Has anyone done an injector replacement? Did you bother with the new numbers? How did you get the new numbers applied? Are their suppliers which take this more seriously than others?

Thanks!

Aaron

 

[Old.Tony]

It might be the way I drive it - fairly sedately with only a good rev-up now and again - but my injectors are still as new (never removed) after 350,000km.

Are you having any symptoms that might make you think the injectors aren't performing normally?

 

[[email protected]]

fuel delivery in modern cars is computer controlled reco injectors callibrated to specs, only the nozzles are changed, the other mating components are set by rubbing on a diamond stone. deliver clean fuel to pump and injectors and they will last fore ever

 

[Aaron31]

Hmm Ok - thanks chaps.
I am only pondering the idea because they are a bit clacky (along with the age/kms). Sure, dumping some LiquiMoly in the tank will quieten them down instantly - but the other thing for me is highway fuel economy. Tony, how many Kms do you get to a tank in 'relatively unloaded' trim - i.e. not towing.
I drive mine rather sedately as well - its lucky (or not?) to rev over 3000.

In terms of wear, I get they are constantly in a state of diesel lube but at the same time, they do what they do a LOT in pretty extreme circumstances!

 

[Old.Tony]

We get between 10.5LPHK driven like Miss Daisy is in the car, unloaded and not towing, to a typical 12LPHK around town, 13LPHK if I have to go out of the local town into the 100KPH zones. Towing (2.5T, double axle) brings the consumption up to 15LPHK for a gentle 85km/h peak on mostly flat ground, to a top of usually 24LPHK for headwinds/hilly country.

 

[landmannnn]

Hi all - I'm pondering the idea getting some re-co injectors - given the ones in it currently are >200,000kms.
One thing that sprung to mind is how/if the unique that are on each injector are still valid if an injector has been reconditioned??

I am working on the basis that those numbers fairly accurately and specifically describe the injectors - for things like how long it takes it to turn on and off, and how much fuel is delivered given a specific pressure - so that that the ECU can then adjust itself accordingly. My thinking is all that would change if they are reconditioned - OR are those numbers recalculated??

Has anyone asked the same question and got a good response? Has anyone done an injector replacement? Did you bother with the new numbers? How did you get the new numbers applied? Are their suppliers which take this more seriously than others?

Thanks!

Aaron

The injectors are graded 1 to 3 in terms of the amount of fuel they deliver.
For that reason the injectors need to be coded to the ECU.
There is very little difference between the 3, so in practical terms you can just swap the new ones in without coding.

As above, there should be no need to replace the injectors at 200k, they normally last far longer. If you do suspect an issue, get a diesel specialist to ultra sonically clean them and check the spray pattern.

 

[grumpy too]

When I visited a diesel mechanic re new nozzles for an Isuzu NPS300 pump/manual injection truck I enquired about reco injectors for the D22 and they said they won't buy/sell or fit any recond injectors including the top rated ones?
Suggest you leave or if real concerned get yours tested and tuned or re mapped as they may then check injectors anyway??
Never had an ECU re mapped as have kept away from higher tech vehicles as long as possible the older Isuzu injectors which were leaving clouds of black smoke behind were done and tested for $300 but even though the D22 injectors are more they are way better than some.
Be careful though if these type of injectors start overfuelling badly they can stuff a piston pretty quick apparently.

 

[Aaron31]

Thanks all - good info.

A