Chevy/GMC Duramax 04.5-05 LLY Discussion of Chevy and GMC Trucks with LLY Duramax Turbo Diesel Engines

Leaking Injector

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Old Feb 21, 2010 | 03:03 PM
  #1  
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Question Leaking Injector

Ive got a 2005 LLY and its spittin fuel all over under the hood. I checked it out and i think that the number 4 injector is leakin. I know that ill have to pull it out and replace the o-rings. What i dont know is how much of a bitch it will be and how much the o-rings cost. If anyone knows anything can you get back to me and let me know. Thanks
 
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Old Feb 21, 2010 | 04:15 PM
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is it a cracked body or just a busted return line seal?
 
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Old Feb 24, 2010 | 12:36 PM
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I think its just one of the seals. either the one that fits on the injector or the one that sits down in the hole. i bought the kit which contains the seals for all 8 injectors. just dont wanna start ripin **** apart without knowing if theres anything i need to look out for ya know?
 
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Old Feb 24, 2010 | 12:44 PM
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theres two lines on each injector, a steel one coming from the fuel rail.

and a smaller fuel return line that runs along the injectors.
 
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Old Feb 24, 2010 | 01:46 PM
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i dont think its the fuel lines. i cleaned up the area around the injectors and ran the engine. i had someone else step on the gas and fuel started drippin out from the injector.
 
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Old Feb 24, 2010 | 08:54 PM
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so its a high pressure leak then? its leaking from the steel line on the top of the injector?
 
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Old Mar 13, 2010 | 06:52 PM
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It was was what i thought. the o-ring and copper washer. thanks for your help man
 
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