Ford figo 2010 starting problem

My ford figo diesel not starting . Fuel pump overhauled , it is showing pressure when tested in machine . After fitting it is not starting . If starts rev going up and down 1000 to 1500 rpm and after few mints engine stops . Injectors checked . Engine checked in lathe for compression leakage pistons with rings are new . Fuel pump relay in fuse box located behind globe box checked , also been exchanged with same one . Ignition switch when put in 2nd position 8 beeps heard . Checked with digonasis tool everything showing ok only abs sign is not going off .Still engine is not starting . Please suggest me where I have to look through to solve the problem thank u