my car is not starting. on 1996 Volkswagen Jetta

My jetta would not start.My electician is attributing it to the brain box is it possible.The fuel is over supplied and u will find some of it in the plugs whole.The colour on it is light blue and green.What does that mean

by in Garnet Valley, PA on March 10, 2013
1 answer
ANSWER by , March 10, 2013
Bio-diesel.