and run a srewdriver sideways across the springs -


When doing this test make sure and not touch any metal of the screwdriver with your hands.The screwdriver should be long enough to reach from spring to spring,it should be layed on top of one spring and slowly moved into the other spring.If the transformer is still good it will fire before the screwdriver touches the other spring.If its good the spark will be strong and if its bad you will get a weak spark or none at all.
If its good and still not firing the burner you could have electro rod problems,they could be out of ajustment.

When In Doubt Think It Out