Plastic tubes around fuel injectors??? - Defender Source
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  #1  
Old May 22nd, 2015, 09:12 PM
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Stephen LeBlanc
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Plastic tubes around fuel injectors???

Hi guys. Thanks for the always great advice.

So my buddy mechanic who struggles with English is swapping on the fuel injectors on my 1994 D90 NAS. He asked me to reach out to you all to ask about the plastic sleeve or tube that holds or has to do with the injectors???? He's new from Kosovo and normally I understand his extreme broken English.

Anyway, he suggests we replace them. Any clue?
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  #2  
Old May 22nd, 2015, 09:34 PM
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Robert Dassler
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o-rings?
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  #3  
Old May 22nd, 2015, 09:36 PM
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Stephen LeBlanc
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Nope. I bought replacement o-rings. No clue what my buddy is referring to. He mentioned never seeing these "tubes" in any car he's worked on before.
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Old May 22nd, 2015, 09:52 PM
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John B.
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There are plastic tubes over the nozzles to protect them until you install.
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  #5  
Old May 22nd, 2015, 09:54 PM
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Stephen LeBlanc
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Thanks but interestingly that isn't it either...I'm dropping off the new injectors tomorrow, so he must be referring to something in the Defender????
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Old May 22nd, 2015, 10:04 PM
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gene
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spill rail?
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Old May 22nd, 2015, 10:05 PM
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Stephen LeBlanc
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Ok cool! I'll have to google what a spill rail is.
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Old May 22nd, 2015, 10:07 PM
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gene
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spill rail is the tubing which the fuel passes from injector to injector and returns excess fuel to the tank
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Old May 22nd, 2015, 10:09 PM
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Stephen LeBlanc
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That must be it. I googled it and it's all coming together now. Is now a good time to replace? Pain in the @ss? He mentioned it looked beat up. So if bad and the gas doesn't return to the tank, would that cause flooding?
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Old May 22nd, 2015, 10:18 PM
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Wait, this is gas? I thought it was diesel injectors. I know nothing of V8 gas fuel injectors, other than I think they are called fuel rail not spill rail. Probably because they don't go back to the tank. Unless someone else chimes in you are probably going to have to put eyeballs on it. Sorry...
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  #11  
Old May 22nd, 2015, 10:19 PM
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Stephen LeBlanc
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Haha yeah gas not diesel. But I think you're on to something.
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Old May 22nd, 2015, 10:26 PM
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Is not the fuel rail steel?
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  #13  
Old May 22nd, 2015, 10:34 PM
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Stephen LeBlanc
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No clue. This is way above my pay-grade. My buddy was referring to a plastic tube related to the fuel injectors being replaced.
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  #14  
Old May 23rd, 2015, 07:11 AM
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Is he talking about the O-rings that seal them into the head?

I don't think you should attempt to change them.
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  #15  
Old May 23rd, 2015, 07:13 AM
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Stephen LeBlanc
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Nope not o-rings. Those come new on new injectors. I sent him a photo of a fuel rail. Waiting to get his response.
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  #16  
Old May 23rd, 2015, 07:33 AM
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Kevin Keith
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Is he talking about the boots on the harness?
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  #17  
Old May 23rd, 2015, 07:34 AM
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Quote:
Originally Posted by Kevin88RRC View Post
Is he talking about the boots on the harness?

Those sure look like "plastic tubes"!!! Awesome. He said they look beat up and need to be replaced. Now, I'll start googling that. Awesome. Thanks!!!
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  #18  
Old May 23rd, 2015, 10:46 AM
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Chris Davis
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I'd be interested if you go that route of replacement as there is no easy way as far as I know to do it. Mine are cracked--I believe you would either need to cut them off and get new connectors and boots or buy a new fuel rail harness and splice it on. Both would be tedious and I have no clue where you would get the parts but if you DO go this route, let me know and the next time I rebuild my engine or have that part apart, I might replace mine. In the interim, I used RightStuff on all my cracks--I cleaned the boots with rubbing alcohol and just dabbed on the right stuff. It has stayed flexible and worked great.

On a side note, the fuel rails sometimes need replacing. I have seen them so badly rusted and pitted that I would never reuse them. I believe they have a cadium coating due to the yellowish color but they do go bad. Yours do not look bad, though.
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