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  1. Alternative Fuels Diesel Additives Lubricants
    Anyone changed injector fuel return lines on 07 LBZ. Broke one and changed out the whole line. Popped new ones in after clips went on. But the question is do you have to cut off the old one and push new one on or pull it off. I figured to see a connection to be obvious and it probably is. Just...
  2. General Discussion
    (Sorry in advance for the long post but any opinions/help would be greatly appreciated). I recently picked up a 2006 GMC Sierra 2500HD with an LBZ engine. Truck is 100% stock besides a 4” MBRP exhaust in its current state. Bought the truck needing a fuel pressure regulator because the truck was...
  3. 04.5-05 LLY Duramax Powertrain
    So I have a 2005 LLY Duramax crew cab and I’m new to the Duramax diesel world and I’ve only owned the truck since October 2019 til now and the truck just turned over 205k miles. Now my question is, would a leaking injector return line cause injector knock? The passenger side, #7 injector, return...
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