po304 code

2006 CHEVROLET CAPRICE
147,176 MILES • 2.8L • 4 CYL • RWD • MANUAL
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TREVER NELSON
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I have replaced all spark plugs and coils checked the wiring and everything runs smooth but the code still appears.
Jun 16, 2017 at 7:28 PM
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MHPAUTOS
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That is a misfire cylinder number four check injector is okay, check compression and check for a vacuum leak at that cylinder, start here.
Jun 17, 2017 at 3:20 AM
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TREVER NELSON
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Where do the injectors sit?
Jun 17, 2017 at 9:03 AM
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STRAILER
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I can get you a diagram but can you check the year and model please? I don't show a 2006 Caprice.

Cheers, Ken
Jun 19, 2017 at 11:28 AM
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TREVER NELSON
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2006 chevy colorado rear wheel drive 2.8 liter 4 cylinder
Jun 19, 2017 at 1:49 PM
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STRAILER
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Please start a new question

https://www.2carpros.com/questions/new

Cheers, Ken
Jun 21, 2017 at 5:26 PM
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