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    Knock, low fuel pressure, slight surge, rough idle, no smoke?

    So I finally got out there again to run it, its definitely not bad fuel. I took return line and supply from top of motor to filter and ran new fuel through it. It definitely has air coming from the return. Not a lot but I see them. It misses and knocks still but every few seconds or minute it...
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    Knock, low fuel pressure, slight surge, rough idle, no smoke?

    I mean not 100 percent. But wouldn't water show up when I drained the filter? And wouldn't it have straightened up whe I ran the injector cleaner through the disconnected lines? I did wondered that too but the fuel smells like deisel and I got no big signs of a lot of water in the tank. I...
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    Knock, low fuel pressure, slight surge, rough idle, no smoke?

    Bosch I had them done. I didn't have the time. It was done like 2 years ago now. No issues until now. I dont put many miles on the truck.im saying about 15k maybe less.
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    Knock, low fuel pressure, slight surge, rough idle, no smoke?

    02 lb7, New injectors as of about 15k ago. 180k on truck. Problem the other day I fueled up, a few miles later it started knocking and sounded like it was missing. Return rates were off on three cylinders, low fuel rail pressure. I have a hard time thinking three injectors just started to act up...