i have a 1990 Mighty max 2.4L and just recently its been having a starting problem it turns over and eventually starts up but its takes 30sec up to a 1min to start, sometimes i pump the gas a little seems to help sometimes . sometimes itll start up fine and ill drive down to the store and itll do it again its now constant and annoying. Now ive changed the fuel pump, fuel Filter, Starter, ignition switch and I cant put my finger on it. ima check the injectors next maybe fuel rail. but before I waste more money on parts it doesnt need I was hoping to get some help here. any help?