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injector o-rings

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Old May 11, 2006 | 10:24 AM
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injector o-rings

Was wondering if any of you have changed internal injector o-ring and how diffecult it is to dissassemble the injectors.
Thanks
 
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Old May 11, 2006 | 10:31 AM
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From: colorado
here are some instructions on how to do it.
http://www.intellidog.com/dieselmann...r.htm#injector
 
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Old May 11, 2006 | 02:15 PM
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I just recently replaced all my injectors.
Once you get them out, you'll see the o-rings aren't that difficult.

https://www.ford-trucks.com/forums/s...d.php?t=480980

..
 
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Old May 11, 2006 | 02:55 PM
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i was wondering about the internal o-rings, anyone taken these injectors apart?

Thanks
 
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Old May 11, 2006 | 03:07 PM
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i have taken them apart. do you mean the large o ring that seals the head from the injector body? (the part that sticks up?) they are easy to unscrew when you have them apart. just hold the body and twist off the head. it may take some huevos to get them. i believe my teacher put the body in a brass jawed vise, but don't do it until i get back to you on that. dont want you to eff up your injectors
 
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Old May 11, 2006 | 03:15 PM
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thanks for the info,i do have a spare if i mess one up. do you know which o-rings normaly leak on the inside.do you have an picture or drawing of an injector taken apart?

thanks for your help
 
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Old May 11, 2006 | 03:54 PM
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no pictures or drawings, but i can take a few pics tomorrow at school if i remember.
 
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Old May 11, 2006 | 04:03 PM
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any special tools req.? was going to machine a split aluminum block to hold the injector if req. What goes wrong with these injector? generaly just a o-ring change?
 
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Old May 11, 2006 | 07:38 PM
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Usually the spring inside breaks.
 
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Old May 11, 2006 | 08:02 PM
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http://www.diesel-central.com/News/injector.htm

here`s One more link if you are interested.
 
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Old May 11, 2006 | 11:42 PM
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Originally Posted by blown99
Usually the spring inside breaks.
Do they get weak? Reason I am asking is my new injectors from Bean's aren't up to my expectations. There is a slight miss at very light throttle around 1300 rpm. The old injectors, however much noisier, were much more responsive.
I've already had him send me a warrenty injector for one that was missing badly.
 
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Old May 12, 2006 | 06:57 AM
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I can't tell you for sure if the spring gets weak. It would probably need a million miles on it before it did get weak. It sounds like you need to graph the fuel rate and rpm during a koer test to pinpoint the bad injector. Or call the guy up and tell him to send you a set under warranty and you will send him the old ones back. There should be no miss at that rpm range.
 
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Old May 12, 2006 | 07:20 AM
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Originally Posted by blown99
I can't tell you for sure if the spring gets weak. It would probably need a million miles on it before it did get weak. It sounds like you need to graph the fuel rate and rpm during a koer test to pinpoint the bad injector. Or call the guy up and tell him to send you a set under warranty and you will send him the old ones back. There should be no miss at that rpm range.
I think I'm going to ask him if he's willing to send me a set of new Alliants and I'll just pay the difference. I've already replace one and I am suspicious of two or three more that aren't pulling thier weight until I give it more than 1/4 throttle.
I don't have any way of graphing fuel rate for my truck unless I could do it with my VAG.
 
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