I have a 1993 Suburban

yes a coil could cause your problem . on the dist dose it have a vacuumn advances unit? if it dose take volt ohm meter and hook it up in series with the pick up coil take a hand vacuumn pump and pump 14 inches your ohm meter should be 1000x scale your reading should 900 to 800 ohms steady . now crank the mtr over if there any change by more than a 100 ohms i would look at the pick up coil pull the dist see how much play you have good luck kdc744

I know this sounds off the wall But, Try it. Replace your Fuel Cap. It sounds like you are sucking air into the Fuel tank. This will cause it too miss Everytime.