Ok camaro gods I need you! It started a few months ago and I'm not sure what the problem is if it is fuel or air! It has no codes and I did a tune up to eliminate a spark problem. My car doesn't want to start but only sometimes! It cranks over just fine but wont fire. Then when it does sometimes it sputters like its trying to get thru the lines???? If it's hot out it won't start at all! Sometimes when it's hot and it does finally start and it's driving it will suck air in between shifting. I considered vapor lock issues, fuel pump, and air idle control?? Lost and frustrated please help!

 

i had a similar problem it was a catilitic converter that was clogged, mass air sensor dirty and air idle control valve issue. ok

 

What is the fuel pressure? Did it do it after working on the car or get worse over time or instantly? Whats all been done to the car and how many miles?

 

Possibly the fuel filter?