I have a 3020 diesel with about7000 hours on it. started it up this morning. Had a slight knock which quit quickly. Idle was rough so gave it a little throttle and heard the knock again and white smoke out of exhaust.
didn't seem like it wanted to shut off .Looked around, checked oil and water. Oil didn't
look dark and ugly like a diesel, was was dark but not coal black.
History . Always change oil regularly, never uses hardly any oil, A hay tractor. did have fuel tank out to fix a leak a couple weeks ago. Been a good running tractor up until.
was thinking injection pump ? fuel pump ? Could fuel injection pump cause it to knock ?