Misfire below 1000rpm

This isn't for my stang, its for my 91 bronco, its got the 5.0 base motor. Under 1000rpm's it has a slight sputter to it. Its weird, only if u apply less that a quarter throttle, anything above that u couldnt notice it. I replaced the plugs, cleaned the dist cap and replaced the rotor, also replaced the plug wires. My next move is to replace the cap, i just cleaned the one on there. My friend used to have a honda accord, it did the same type of sputter and it turned out being a hairline crack in the dist cap. Hopefully it will be that. Otherwise it runs like a champ, and loves the gas :notnice: , any input or ideas would be great. thanks

Nick
 
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