The past two days I have had to turn the key and give it gas for it to start?

I’ve been driving the vehicle the past two days and had to turn the key and give it gas in order for it to start. I thought it was a fuel issue since I have a vapor lock because I can only put no more than 3.4 gallons in the tank or else it fills up at the filler neck and takes a long time for the fuel to go down. When I was ready to leave the gas station the car was going to turn over but when I tried the second time all the whining was all the noise it made. Got it towed home tried again still a whining noise. No clicking, just whining.