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Missing problem

  

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got a 95 firebird formula 5.7 lt1.started missing real bad.put on a new mass air flow sensor.didn’t fix it.put brand new spark plugs and wires on factory ones.now it’s running even worse than before.barely wants to run now.spark plugs been gapped to specifications.going to put on a new map sensor.any ideas what it could be if map sensor doesn’t fix it 


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Try diagnosing it using this guide - 

https://carkiller.com/scottykilmer/qa/misfire-4/


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