hope for anybody's idea what would be the cause. Vehicle is a Pajero, automatic 1999 model, 2.8 diesel engine, mileage is at 53,000km

Here's the problem hard starting siya sa umaga. As long as it had stayed overnight parked. After I put the key and turn it I wait for the heater light to dissapear then I start the car. Now here's the weird thing the cars starts then after a few seconds like 10 to 20 seconds the cars starts to shake, smokes white smoke and dies. After this the real problem starts when I try to restart it takes a long time for the engine to start. I just keep on cranking the engine but it does not want to start. And when it finally starts the whole cars shakes and smoke a lot of white smoke and also dies. For me to make the car run and not die again , I have to step on the gas rev it at 1k. But the rev at 1k fluctuates between 800 to 1k. Its like I am stepping on the gas and releasing then stepping but in fact naka pirme lang ako. And at this stage the whole cars smoke even more white smoke and shakes. This takes at least 2 to 5 mins evertime I try to start the car. Now what could be the problem. This started a day after the summer has ended. Or when the temperature in the mornings started to become cold.

some of my thought and diy to fix the problem but failed

1. carbon cleaning after having it done I have my fuel filter changed still the same.

2. Before having the fuel filter change about 2 months ago and 200 kms before I used biodiesel with a concentration of 80%. The whole carbouy was filled in the tank when the fuel light lit up. around 20liters sa carbuoy and less than 10 liters sa tank.

3. I thought it could be the heater plugs ? Had then changed at 25k km ago but the cars starts naman pag 1st try and just dies afterwards. Kaya I ruled this one out.

4. Thought it could be overhaul kailangan na . But wala naman oil consumption and the oil is new around 500km palang.

am out of ideas whats your thoughts