Posted by Morgan Flowers on March 10, 2012 at 16:55:47 from (69.55.123.195):
I enjoy all the things posted on here and I know there is a lot of knowledge about diesels on this forum so here's the problem with my road TRACTOR hehe :)
Engine is a Cummins N14 in a 99 Freightliner. I bought the truck with a knock in the engine. Found the problem to be a galled piston and cylinder liner. I put a new liner, piston, rings and gaskets in it. Just to be safe I cleaned out the piston cooler nozzle and it did have a piece of gunk that could have been restricting oil flow to that cylinder. I cleaned it out and reinstalled.
Today I got the engine together and started it and it still has a slight knock. It is not nearly as bad as the noise was before and the noise can be heard the most through the breather. If you put your hand on the outside of the breather it is like someone is beating the breather with a hammer. Engine runs smooth and doesn't miss.
Does anyone have any ideas? I am thinking maybe the injector on #5 is dumping too much fuel into the cylinder and that is what caused the problem in the first place? Let me know what you all think... Thanks in advance, Morgan
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