I have a 2003 skoda octavia 1.9 tdi. It was running perfectly fine until recently when my timing belt failed. It got partially cut and slipped. Thankfully engine did not suffer any damage and was confirmed with a compression test. The car started fine after replacing the belt and was running well.I drove about 30 kms the day I got the car and parked it at home overnight.I tried starting in the morning, it cranks but engine didn't fire up.I got it to my mechanic to check the car, he checked the pump, diesel lines, fuel supply right to the injectors which were spraying fine. The heater relay 103 was blown.I replaced it and also manually heated the glow plugs, but the car does not fire. What could be the problem?