1994 Chevy Caprice
About two months ago I let this guy change the sprark plugs in my 1994 )Chevy Caprice (5.7) and was told I didn't need any wires. The car drove fine for about 4 or 5 days. Now when I get to a stop light the car Idle very hard and raddle like it want to take off and when I hit the excelerater the car zoom off to about 25mph and then slows down. I have to take my foot off the gas paddle and the car very slowly excelerate to 30 mph and it takes for ever to get to 30mph. This car has no power at all. I change the converter to the car but I'm still having the same problem. I was thinking that the guy didn't gap the plugs correctly. Anyone have any idea what going on with this car. I just brought new Bosch plugs to replace these or am I wasting my time here. Can anyone please advise???? Help please???

