Jaguar Repair: no start

Question
there is no spark in the number one plug what do i need to replace

Answer
Hi Jose,
You should not replace anything until you find what is wrong. First, what kind of car is this? Also, you make two different statements, In the "Subject box" you say "No Start" Then you say "No spark in number one plug"

Loosing spark on number one plug will not make an engine not start. So which is it?
Howard