My car began jerking on a slight incline. I later tested it while avoiding hills and heavy acceleration. It drove mostly normally, although I may have felt one mild jerk. The dashboard warning lights remained on, but I was able to drive the car about 8 miles home.
The OBD reader gave me code P0087 I understand that I may be able to check the in-tank pump by putting the ignition in the ON position without starting the engine and listening near the rear seat for a brief humming sound. I have also been researching how to safely depressurize the fuel system if the high-pressure pump needs replacement.
The car has also had an oil leak, possibly from the valve-cover gasket, for two or three years, although that may be unrelated.
Does this diagnosis and testing process sound reasonable? Is there anything else I should check before replacing a fuel pump? I have previously replaced brakes, calipers, rotors, a radiator, and an alternator, so I am comfortable doing repairs when I have clear instructions.
Any recommendations would be greatly appreciated. Thank you