fuel injectors

Gentleman, if I have a bad injector which would be indicated by NO noticeable change in the engine rpms, correct me if I'm wrong.
and if and when replacement of a fuel injector is needed is it advisable that if I have pulled out a injector with one spray pin hole to replace it with the same or can I replace it with one with two spray holes, this is for a m35a2 multifuel LDT 465-1d

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220 - 221, whichever gets it done.

Personally I'd go with the 2 hole. You might want to pull them all and have them pop tested. I was amazed how bad mine were when I did it.

The single hole work fine, they just make the exhaust a little smoky in comparison.

How many miles did you have on them?

Do you know the recommended mileage necessary before injectors need attention?

Thanks

gimpyrobb said:

220 - 221, whichever gets it done.

Personally I'd go with the 2 hole. You might want to pull them all and have them pop tested. I was amazed how bad mine were when I did it.

The single hole work fine, they just make the exhaust a little smoky in comparison.

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The injectors had never ben touched by me till I pulled them to pop test. For all I know, they were in there since 1975. It matters not recommended milage if you don't know the last time they were serviced!

orren said:

How many miles did you have on them?

Do you know the recommended mileage necessary before injectors need attention?

Thanks

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Truck shops replace the injectors by mileage, while buses replace them by hours run. It all depends on how their used. Hard high-way mileage and they will go a long time. Short "stop and go" running will plug them up fast. It all depends on how you drive. Now having said all that I would take them all out and have them serviced. Then you will have a starting point (like Gimpyrobb said) and a understanding of how the engine should be running so when they get dirty and clogged you will know something is up.