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Knocking 3406b frustrated !!

7K views 9 replies 6 participants last post by  w9l 
#1 ·
Customer brought me this truck already taken apart didn't hear it run. Said 3-4-5 were full of water motor wouldn't turn over they pulled the head. Then I got it. Exchanged head reassembled got coolant in oil. Teardown and inspect. Found cracked liner. Replaced all 6 cyl packs oil pump and all bearings. Started up smooth but has a knocking noise at the front lower end checked everything can't seem to find the knock.
 
#8 ·
Does it change tones? When mine went back together I had a know that would come and go, I had to crack all the lines before it went away.
 
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