Black smoke from the tail pipes when I nail the throttle from a roll
06-09-2008, 04:12 PM
#1
Black smoke from the tail pipes when I nail the throttle from a roll What could this be? I was told black smoke means its running really rich. Oil is white smoke, correct?
No smoke if I nail it off the line, only when I'm already rolling (45mph or faster) do I put out a continuous trail of black smoke while I'm on the throttle and accelerating hard from a roll.
I mean a big cloud too. Where I will lose sight of a car just a few lengths behind me.
Can a tune change on its own and run rich?
427ci, ported LS6 heads, LS6 intake, 1 7/8" LT's, dyno tuned 5 years ago.
No smoke if I nail it off the line, only when I'm already rolling (45mph or faster) do I put out a continuous trail of black smoke while I'm on the throttle and accelerating hard from a roll.
I mean a big cloud too. Where I will lose sight of a car just a few lengths behind me.
Can a tune change on its own and run rich?
427ci, ported LS6 heads, LS6 intake, 1 7/8" LT's, dyno tuned 5 years ago.
06-09-2008, 04:18 PM
#2
FormerVendor
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That definitely sounds too rich but it is odd that you'd see it only under certain conditions (e.g. the rolling start).
Have you pulled a plug to see how they look?
Have you pulled a plug to see how they look?
