Searched, found lots of white and blue smoke threads but no black smoke threads.
Shortly after leaving work tonight as I was getting on the freeway I got stuck behind a semi doing ~30MPH, everybody was whipping around the two of us and took a wile to finally find a hole to go around, had to floor it to not get rear ended, tranny downshifted and R's went up to 4-5K or so, looked up at the truck bearing down on me and noticed a thick cloud of smoke coming out of the back of my 80 in the glare of his headlights. It looked like black smoke but not 100% sure in the dark. Power output was good and seamed smooth. As soon as I let off it up shifted R's came down and the smoke immediately stopped.
Black smoke should be partially burnt fuel, I know the computer will go slightly rich at higher power setting but I would not think that it would go so rich as to make a cloud of smoke?
Engine was in the later stages of warm up and should have been in closed loop.
I am going to try to reproduce this in the day time and see what i get.
Hopefully this was not white smoke, about 2 months ago I did have to put some coolant in the overflow but the coolant is close to 2 years old and the level had not been adjusted since, it has not dropped noticeably since.
Any idea's / thoughts
Shortly after leaving work tonight as I was getting on the freeway I got stuck behind a semi doing ~30MPH, everybody was whipping around the two of us and took a wile to finally find a hole to go around, had to floor it to not get rear ended, tranny downshifted and R's went up to 4-5K or so, looked up at the truck bearing down on me and noticed a thick cloud of smoke coming out of the back of my 80 in the glare of his headlights. It looked like black smoke but not 100% sure in the dark. Power output was good and seamed smooth. As soon as I let off it up shifted R's came down and the smoke immediately stopped.
Black smoke should be partially burnt fuel, I know the computer will go slightly rich at higher power setting but I would not think that it would go so rich as to make a cloud of smoke?
Engine was in the later stages of warm up and should have been in closed loop.
I am going to try to reproduce this in the day time and see what i get.
Hopefully this was not white smoke, about 2 months ago I did have to put some coolant in the overflow but the coolant is close to 2 years old and the level had not been adjusted since, it has not dropped noticeably since.
Any idea's / thoughts