I have a 1998 Saturn SW1 with the SOHC engine. Sometimes the car refuses to start. The only way to start it is to depress the gas pedal. I replaced the battery and the starter when I first got it.
I recently replaced the spark plugs and wires. Found the No.4 plug is covered with dark stuff. The #4 injector is all wet. The other 3 are fine. I am not sure if the injector is covered in oil or fuel, since the oil cap is right in front of it.
Because the injectors are a bit expensive and the previous owner told me he already had the fuel filter replaced, I decided to do a fuel pressure test. I am not sure what are some good numbers for this vehicle but the readings I got was: around 50+ psi with the key on and engine off. 70ish psi with the engine idling.
I also read that the fuel pressure regulator is inside the filter itself. I would like some advice on what I should do in this case?
Any help is appreciated. Thank you.