2004 4.6L hard to start & gas smell

[dssgod]

This explorer has the symptoms of a leak fuel injector(s). It's very hard to start when the engine is warm and it has been sitting for a few minutes. You need to apply full throttle to get it to start. I had a 2 codes for the MAF but after I cleared the codes they did not come back. Alsohad a code for inusfficient EGR flow and cleaned the egr, and lean codes for bank one and bank 2 02 sensors. After clearing the codes they did not come back but the problem is still there. You can really smell the gas everytime you start. Has anyone run into something like this before?