Pre-Power Stroke Diesel (7.3L IDI & 6.9L) Diesel Topics Only

rear injector no needle tip?

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Old 02-01-2017, 11:50 AM
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rear injector no needle tip?

I'm assuming there should be a needle tip on the bottom just like the other 3 injectors I did. I need to replace this injector?
 
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Old 02-01-2017, 01:39 PM
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Yes. If it's not there that is a problem. I would recommend a set of injectors from idiperfomance.com, rather than individual replacement. They are a maintenance item.
 
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Old 02-01-2017, 06:09 PM
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Originally Posted by Ford_Six
Yes. If it's not there that is a problem. I would recommend a set of injectors from idiperfomance.com, rather than individual replacement. They are a maintenance item.
​​​​​​​I appreciate it. I'll get it replaced the rest looked okay
 
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Old 02-01-2017, 10:51 PM
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If they have grey paint they are OE. The injectors are carefully calibrated to open at a certain pressure, which has an effect on the timing when there is a variance between the injectors. If an injector has a low opening pressure, it will fire minutely earlier than the others.
 
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Old 02-02-2017, 08:27 AM
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Originally Posted by Ford_Six
If they have grey paint they are OE. The injectors are carefully calibrated to open at a certain pressure, which has an effect on the timing when there is a variance between the injectors. If an injector has a low opening pressure, it will fire minutely earlier than the others.
​​​​​​​I just changed all the orings and crush washer and they looked ok plus I just ran seafoam and diesel klean not to long ago. BuT I don't recall what paint they were but someone was definitely in there before. A few orings were green or black or brown I'll replace all injectors in future. When I drove her home a few months ago I had 0 issues. Purr like a kitten. Then the air intrusion started
 
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