Octavia tdi will not start

Bought this car as a non runner, Bought a battery, new glow plugs, checked engine and fuel pump timing, new air filter and engine stop solenoid. Engine spins well and tries to fire,have diesel smoke slowly coming out of exhaust, Also changed relay 109 and glow plug relay. Still won't start. Am getting no power to the glow plugs and have a flashing glow plug light on dash. Has anyone any suggestions??? Or should I just torch it? Also plugged in a fault code reader and it has no codes stored. Please advise as I'm rapidly going off this car!