I recently had some sputtering issues with my 2007 focus so I took apart air box and filter. Found water in air box so I cleaned maf sensor with parts cleaner and also throttle body. Put all back together with the one hose on top and maf sensor plug and throttle body plug in place too. Went to start car and it won't run. Spits and backfires. Checked for spark and have it,checked voltage at injectors and have 12v, take gas line off fuel rail and it sprays. I hear fuel pump also kick in. So I put different maf in and throttle body and fuel filter in. Still won't run. Not sure what I'm missing.