I’ve got a 1982 automatic chevy 454 engine with only 46,000 miles on it (in my Winnebago RV). It runs just fine except each time I step on the gas pedal from a stopped position for an instant it sounds like the engine is about to die and then it starts going. Is this a major engine problem or something that requires minor adjustments? I want to sell the RV. If it’s going to cost a lot to fix, I’d rather lower the price of the rig.