What would cause the manifold to turn fire hot in a 1995 Cadillac Sedandeville 4.9

1995 CADILLAC DEVILLE
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AMAC29
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Manifold turns fire red in less than five minutes of running
Mar 3, 2012 at 8:17 PM
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FIXITMR
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you mean it glows red?
Mar 3, 2012 at 8:23 PM
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AMAC29
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Yea
Mar 3, 2012 at 8:27 PM
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FIXITMR
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is CAT red TOO? is this at night?
Mar 3, 2012 at 8:36 PM
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FIXITMR
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usually means overheat due to lean mixture or blocked exhaust/cat
Mar 3, 2012 at 10:41 PM
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