I bought a car today that was working perfectly fine when I was getting a diagnostics on it. I was able to drive to the shop and back in no problem. I tried to start it again later the same day and it didn't start. The engine will try to turn over slowly but then it'll just start making this clicking noise. The car shop I took my vehicle to said I have a transmission leak (nothing is wrong with the transmission it's just leaking is what they told me) and they also said I have a extended crank when starting my car and they said the cause of that might be the battery or fuel pump. I checked the car's battery after it wouldn't start and it's fine. So does that mean it's the fuel pump that is source of my car not starting? And if it is the fuel pump that's the problem, should I replace the whole pump or just certain parts of it?
Ps, the car is a used car.
My car has 153000 miles.
My car has an automatic transmission.
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