1997 Chevy Tahoe rough idle po304 code

1997 CHEVROLET TAHOE
173,000 MILES • V8 • 4WD • AUTOMATIC
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BILLY HURST
  • MEMBER
  • 1 POST
it's running rough w/code of po304,I've replaced plugs,wires, new Distributor, new fuel injectors and still rough idol. out around $800.00 so far. What else could it be ?
Mar 26, 2010 at 1:08 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check spark plug/wire,fuel injector and compression on #4 cylinder.
Mar 26, 2010 at 10:57 PM
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