Difference in 03 injectors and 04.5 cummins injectors? - Diesel Bombers



5.9 Liter CR Dodge Cummins 03-07 Discussion of 5.9 Liter Dodge Cummins Diesels with Common Rail Injection

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Old 01-31-2011, 06:59 PM
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Default Difference in 03 injectors and 04.5 cummins injectors?

What is the difference between the injectors in the so motor and the ho motor and i heard from some of my friends they said that the 03 injectors are more reliable, is this true or not?
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Old 01-31-2011, 07:01 PM
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There injectors go from 03-04 to 04.5-07
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Old 01-31-2011, 07:41 PM
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well i know that, does the 03 injectors inject fuel different and are they better than the 04.5 cummins injectors.
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Old 01-31-2011, 08:44 PM
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One is not better than the other.
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Old 01-31-2011, 09:01 PM
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oh ok.
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Old 01-31-2011, 10:43 PM
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its actually a programming difference 03 04 inject fuel 2 times per event
04.5 and on inject fuel 3 times per event
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Old 02-01-2011, 08:15 AM
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which one is better or better fuel milage or reliabilty
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Old 02-01-2011, 09:11 AM
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sheesh, 03- 04 8 hole injector nozzles, 04.5-07 5 hole nozzles. they also have different spray angles to direct the fuel into the piston bowls that are also different on the trucks. you should not put the wrong ones in either way. The bodies are the same, however newer bodies are out that address some issues........... be sure of your truck, its parts, and their uses. easiest way to check for 5 hole vs 8 hole is not by simply looking, but by spraying wd40 through the nozzle with the needle removed with the red straw over a piece of paper to see the spray patern/ count the holes. Needlesare supposed to stay with nozzles, as in they become matched.
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Old 02-01-2011, 09:19 AM
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so then the 04.5 injectors have more issues?
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Old 02-01-2011, 08:17 PM
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Quote:
Originally Posted by 98dodgecummins View Post
my friends they said that the 03 injectors are more reliable, is this true or not?
Not true. Neither will will last long with dirty fuel. Both will last and work well with extra filtration. There is NO difference in the bodies or tips other than number of holes and spray angle.
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