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    3. I have 1996 achieva starts fine idels smooth put backfires at 4000 rpms whats the problem?
    I have 1996 achieva starts fine idels smooth put backfires at 4000 rpms whats the problem?

    put leave off fuel idels fine

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    0  Views: 345 Answers: 1 Posted: 12 years ago
    Tags: 2.4l achieva engine
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      1 Answer

      Your best bet is to have the engine diagnosed. There are many things that can cause backfiring. Improper timing, bad plugs and coils, components malfunctioning, O2 sensors, gas/air ratio is too lean or too rich and so on. 

      12 years ago. Rating: 2
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