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Re: 97 vortec 5.7 question???
I would do a tune up using all GM or Delphi parts, rotor, cap, wires and AC Delco spark plugs. Clean throttle body. Chances are that will take care of the miss you have. Is the CEL coming on? IF so go to autozone and get the codes read and post (they read the codes free of charge). When was the air filter changed last?
Goo Luck
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