Car takes a long time to start due to fuel running back to fuel tank or from eng

Hello, This is commonly the result of a faulty fuel pressure regulator. If the regulator is leaking internally, it will not hold pressure when the fuel pump is turned off, and a quick workaround is this: When you get in the vehicle, turn the key to "ON" instead of starting right away. Buckle up, check your mirrors, play on your phone, set the radio, or whatever you feel like doing for 10 or 15 seconds. Then start the car. That will make sure there is enough time to build fuel pressure before starting.