premise: She did not drive it at all that day , and I have also installed previously a battery cut off since she has a slow drain somewhere in the car that I do not have the technical know how or time to fix . Today , she calls me again and it wo n't start again . I go out , turn it over , and its not firing like yesterday . I pull the plug wires and check for spark , no spark . What is n't firing ?
hypothesis: the phone that she called with