I can't figure it out. I'll have the car out and it will run unbelievable....2 miles down the road it coughs and gags and I wonder if it's gonna make it home. It does this off and on. It may run go for a couple hours in between acting up. Doesn't seem to matter if it's hot or cold. It's driving me nuts. Thanks for any ideas. I have new plugs and wires by the way.

 

Make sure the barrels on the ends of the spark plugs are on tight... Mine did that and all the barrels on the spark plugs were loose.