Cummins White Smoke

Its not timing...the cam keeps the injectors closed tight ...if the cam gets dimples in the surface ,injectors leak fuel into the engine when they aint supposed to .............I had lots of new 335 stuff from the army including new cams ..........still got lots of new injectors ...somewhere .............ive let a million bucks worth of stuff go rusty ,we were looking for steering box roller studs other day ,got hundreds of them,all with rust on the surfaces...........easy come /easy go.