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running lean?

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Old Jul 20, 2006 | 01:28 AM
  #1  
TA-ls1's Avatar
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running lean?

ok tonight i saw light colored smoke coming out of my exhaust. it was about 70 degrees at night and my friends headlights were shining on my exhaust. i dont normally see any smoke though. so was it the situation or could i be running a little lean? when a friend and i were driving and we decided to floor it, a friend behind us said they saw white smoke from my exhaust which makes me worried i am running lean.

if so how do i fix it, and what could be causing me to run lean? thanks
Old Jul 20, 2006 | 06:24 AM
  #2  
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Re: running lean?

White smoke doesnt mean you are running lean...

Blue smoke is oil
Black is fuel
white is usually coolant
Old Jul 20, 2006 | 06:31 AM
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Re: running lean?

burning of gasoline produces water as a byproduct, alot of times you'll see steam comng from the exhaust.

the "puff" could have been condensed water in the exhaust (muffler) that was suddenly blown out when you floored it.

if it's running fine...i wouldn't worry about it
Old Jul 20, 2006 | 09:27 AM
  #4  
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Re: running lean?

Originally Posted by teke184
burning of gasoline produces water as a byproduct, alot of times you'll see steam comng from the exhaust.

the "puff" could have been condensed water in the exhaust (muffler) that was suddenly blown out when you floored it.

if it's running fine...i wouldn't worry about it
ditto
Old Jul 21, 2006 | 04:29 AM
  #5  
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Re: running lean?

thats good to hear. thanks 4 the help
Old Jul 21, 2006 | 08:30 AM
  #6  
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Re: running lean?

Originally Posted by SMUJeremy
I had some black smoke come out of my car on the dyno, AFR was 13.2, that is rich or lean? I always forget.
A little on the lean side. But any car will puff black smoke on it's first dyno pull of the day.
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