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just bout a 95 ss and it has a miss and backfires until i get to about 30 mph. the previous owner said it needed wires and he just changed the plugs. well while i started changing the plugs today i noticed the plugs on the passenger side were just hand tight so i pulled them out to check the gap and they were at .035 so i gapped them to .050 but only got to do the passenger side because it got dark but all wires are new. plugs are new but i dont believe the drivers side is gapped correctly. so i started it and its still doing the same thing. do yall think its the other plugs. just wondering. never came across something like this
 

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Could be anything but my guess would be it needs and opti.

You need to make sure the plugs, wires and the rest of the ignition system is right then if it's still acting up, check the fuel pressure and then consider a new opti.
 
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