I have a 1999 Tahoe 4x4 with the 5.7 new long block was running/ performing perfectly I purchased a Yukon and parked my Tahoe for two weeks then when I went to drive it battery was dead and **** got a new one fired right up but now it has a slight stumble when hot and idling drive ok but when getting on the highway it smells like it’s getting loaded up with fuel and it accelerates but feels like it’s getting bogged down fuel pressure is 50psi at idle no codes really frustrating spark plugs look good new coil and distributor when engine was replaced and new fuel pressure regulator maybe I have checked everything I can think of and have found nothing that appears to be wrong