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  1. Mysterious Misfire Symptom, Intake Manifold or Head Gasket?

    4.3 Mechanical
    I have been dealing with a very tough-to-track-down misfire on what I believe is cylinder No. 2. I took the rav4 to the dealer and had it diagnosed, and they came back with recommending a head gasket replacement. They think it is blown. My question is WHY do they think that? I have NO excess...
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