The vehicle is difficult to start The problem has gotten progressively worse over the past 2 months It wants to start but will not fire It will start after 10 tries and then runs fine As long as its warm it will restart with no problem I used a gas additive and cleaned the air flow sensor as well as changed the air filter None of this solved the problem
Use a gage and check fuel pressure. If you have the spider fuel system, it is known for problems. The poppet valves may need cleaning. The cleaning procedure I have is a shop procedure. I dont know that an additive in the gas tank will help.