it just started happening, but only seems to occur when the throttle is pressed, either from driving or from pressing the linkage from the engine
Buick Q&AAsk Your Question
1991 Buick Century Question: what can be causing black smoke to come from the exhaust during acceleration?
Answer #1Action702 March 20, 2014, 14:40Journeyman
Could be anything
Is the smoke grayish white smoke?
Answer #2pushrod March 20, 2014, 14:58Master
Engine is running rich! Have the fuel system componets and related sensors tested!
ReplyTC21, March 24, 2014, 16:20Rookie
I cleaned the throttle body and the MAF sensor and that seemed to help a little bit
Answer #3G. T. Service Center (4215 Answers) , Stephenville, TX - (254) 638-3236ProfessorG March 20, 2014, 15:54Master
Agree with #2, to much gas.
ReplyTC21, March 24, 2014, 16:24Rookie
that was one of the first things I noticed was the poor gas mileage, that 3.3 was sucking it down like a v8