Question about 1992 Toyota Pickup
Black smoke is caused when the mix of fuel and air becomes un-balanced. Normal mixture is 14.5 parts air to1 part fuel. When the fuel to air mixtures change because of a malfunction the mixture can go as high as 14.5 to 2 or 3, two to three times the proper amount. The black smoke is the excess fuel generated from the rich mixture and can be cause by one of the following:
Posted on May 15, 2010
Could also be an Oxygen sensor located on the exhaust pipe. Be sure to see how many wires it has . Usually they have 4. It depends on the model.
Posted on Nov 11, 2011
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Posted on Jan 02, 2017
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