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  1. Join Date
    May 2005
    Posts
    16
    #1
    I had my 4d56 engine calibrated last week. Most of the parts of the injection pump were replaced except for the nozzle tips. Lately, I observed that there is to much fuel knock. Will replacing the nozzle tips solve my fuel knock problem. Please advise. Thank you.

  2. Join Date
    May 2006
    Posts
    635
    #2
    recheck injection pump timing

4d56 fuel knock problem