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Q:

engine seems to be runing rough while driving on 1998 Toyota 4Runner

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
my toyota 4runner is running rough when i go 40 miles an hour or faster it feels like a bad sparke plug or wires. I replaced all those things and its still seems to be missing but it idles fine.
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