1994 Volvo 850 Q&A

1994 Volvo 850 Question: My 94 850 turbo is missing and backfiring. Black smoke when revs up.

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? -
Answer 1
Fuel pressure sounds good. Have you checked for any trouble codes? Is the check engine light on? -
Comment 1
no engine light coming on... -