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  1. B

    lb7 knocking

    Got my fass down to 8 psi 3 new injectors and a fpr it still has a fuel knock
  2. B

    lb7 knocking

    Should I take it to a diesel tuner I don't have any equipment..
  3. B

    lb7 knocking

    If I run it with pump off will the fuel go threw the filters I red somewhere if the pump stops working the fuel will bypass the filters
  4. B

    lb7 knocking

    How do I do that
  5. B

    lb7 knocking

    I have a new cp3 with a new fpr. I think the lift pump was 15psi and the rail I can remember I have a print out at home
  6. B

    lb7 knocking

    Supposedly a reputable dealer they were $220 a piece
  7. B

    lb7 knocking

    I have an 03 gmc 2500 I just got new injectors ,cups and all new lines installed and I have a fass lift pump .now I have a knock that comes and goes sometimes it's pretty loud and others you can hardly hear it.it seems to be quieter when the air temp outside is cold and it gets louder when hot I...