Yes it is possible to push start a diesel engine vehicle.
they can both start a car
Yes, you can start diesel engine even if you don't have battery in!
you press the button start
No
No, you cannot push start a manual car with a dead battery. Push starting requires the battery to have some charge to ignite the engine.
JUST PUT DIESEL IN IT! thats a stupid question if i ever heard one. the answer is in the question.
you push the button again
Example of the word push: I push my kids in a buggy. Push the car to start it.Throwing a baseball
Yes
no
Bad starter-we can only speculate
Yes if your tank is empty but not if it has some diesel in it, But not if your car runs on gasoline.