Vehicle has been having issues starting lately. It will fire up, but then when I stop it and try to start it again it will crank over but wont start up again. I changed the battery, the battery terminals, and just put in a new PTU and relocated that yesterday. Same issue still happening. But this time when It wouldn't start the second time around i felt it start to catch a little so I pumped the gas and got it to fire up, so leads me to believe its a fuel issue. Just wondering any suggestions of where to start looking if anyone else has had a similar problem.