Black smoke from exhaust pipe

1994 OPEL OMEGA
500,000 MILES • 2.0L • 4 CYL • RWD • AUTOMATIC
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MK.ALI
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Black smoke is appear from exhaust when i pressing to throttle (3000-4000) rpm. Engine is not works probably on idle (rpm is about 500).I replaced the intake filter but no change was happened. The fuel injectors eclectically works good when i am testing it. Whats your advice please? With my regards.
Sep 11, 2017 at 7:26 AM
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STRAILER
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Two things come to mind as the first things I would look at. If you have a vacuum leak it will cause the system to run rich. Here is a guide to check for that:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Next I would check the fuel pressure regulator vacuum line to see if raw fuel is present. Here is a guide so you can see what I am talking about:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Here is a guide for black smoke:

https://www.2carpros.com/articles/engine-black-smoke

Please let us know what you find.

Cheers, Ken

Sep 12, 2017 at 10:44 AM