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My 94 850 turbo is missing and backfiring. Black smoke when revs up.

(1994 Volvo 850)
in Boone, NC on April 28, 2012
We have checked fuel pressure ,at 40 to 60 pounds. Is this the right range? We have changed fuel filter, spark plugs, checked distributor cap, and timing. Any suggestions as to why it may be stalling out and running rich?
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Popular Answer
on April 28, 2012
Fuel pressure sounds good. Have you checked for any trouble codes? Is the check engine light on?
on April 28, 2012
no engine light coming on...
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