Question about 2000 Volvo C70
Black smoke describes poor engine piston rings or worn valve seals in the head cylinders
that will reduce power as well
check your engines oil level daily if driving this way
Posted on Mar 27, 2011
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Posted on Jan 02, 2017
SOURCE: My C70 Volvo 2000, got
Black smoke from exhaust of car comes out while you are driving indicates that the car air fuel/ratio is too rich, when a car air/fuel ratio is too rich, more gas is being burned from a cars engine combustion chambers.
The engine is consuming too much gas, the problem relates to fuel injection.The fuel is running too rich or too lean.Get the o2 sensors checked, get the fuel filter checked, get the IAC( idle air control valve) checked.Also get the throttle body checked.The IAC valve located on throttle body.Clean both IAC and throttle body with a crab or throttle cleaner.IT can be bought from local auto part store.The O2 sensors located before and after catalytic converter.Replace both, the pre and pro O2 sensors before and after catalytic converter.Also see if catalytic converter is clogged and worn out, then it has to be replaced.Also check the fuel injectors, if they are cracked and leaking, this results in black smoke. --------------- This are the possibilities, that can cause black smoke and no power to engine.First get the throttle body , IAC valve and O2 sensors cleaned, then see, if the problem still occurs, then go for catalytic converter cleaning and injector checking.If all checked or replaced, but still the same problem, then the spark plugs and coil pack are to be checked.But its rare that spark plugs and coil pack causing black smoke or no power to engine,--------------- This should help.Thanks.Keep updated.Helpmech.
Posted on Mar 27, 2011
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