Mazda Repair Questions? Ask Mechanics for Answers ASAP
Have you checked if the alternator is charging at about 14.v idle ?
Well first things first you need to put the battery on a charger and let it charge once it has charged let it see and make sure it holds a charge. If it does I would suspect a bad alternator. Ir should be able to run off its own battery power not need a jump. Low voltage will cause alot of issues in a cars electronics and will cause injectors to no fire correctly and much more.
If it drove around for a while I don't believe it to be a alternator, I would charge battery and make sure it holds charge. May have parasitic drain or bad cell.
It seems like that should take care of it but, If it continues you will need to start looking Into electrical systems and components.
No problem at all!
This is how you would check fuel pressure
You would need a master kit or the proper attachments. If you can't find the proper gauge you can disconnect the pressure line to the fuel rail place water bottle over end and crack that will give a volume sample and atleast tell you fuel is at rail.
You would need to do research and either speak with a snap on dealer or go to local tool store and ask if they carry it..