LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Please help me ease my nerves!! i know black smoke means unburned fuel but...

Old 02-08-2003, 09:39 PM
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Please help me ease my nerves!! i know black smoke means unburned fuel but...

I was doing burnouts with a friend of mine on a sheet of packed snow (ice) tonight in a parking lot... one time i spun the tires up to 105mph.. (didn't mean to go that high) and when i finished a friend of mine said it started pouring out "all this black smoke".. i've asked a few people and they said that it means i got carbon buildup and to be careful cause that how you burn a valve... but... with the way i run my car and all the treatments i put in it there should be NO carbon at all... please give me your INDEPTH thoughts... thanks you in advance.. iim freakin out... my car? blowing smoke? NOOOO!!!!
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Old 02-08-2003, 09:43 PM
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oh yeah, by the way... after my friend told me about this...i poped the hood and push down on the throttle trigger by the head... i must have revved it to a good 4, 4500 or more doing that and i was looking at the exhaust the whole time... no smoke at all... just a LITTLE white (condensation, not coolant) and it drove/ran fine on the way home even at WOT no noise nothing... and i couldn't see any smoke in the rearview (although it was at night)... just wanted to add that to the equation....
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Old 02-08-2003, 09:55 PM
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heres what happened-
dont worry, my rear bumper is burnt because i did so many times

your TB is wide open and your motor is spinning high

so you have lots of fuel being dumped in. you close the TB at once and then bam- no more air
so now the gas in there cant burn and comes out the exhaust, expodes in there causing popping and black smoke and all that good stuff, even little flames out the back

at the track i would trap around 5200rpms
and then i'd get off of it real quick

yea, my bumper is burnt


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Old 02-08-2003, 09:57 PM
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what he said
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Old 02-08-2003, 09:59 PM
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well now im relieved about my enigne... but scared ****less my bumper is burned...
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Old 02-08-2003, 10:04 PM
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ohh i should probobly add this is a disclaimer-
if your driving normaly and there is black smoke, there is a problem





just go look at your bumper.
mine looks like it has 2 black racing stripes- i didn't have exhaust tips though.

ps
your not going to burn a valve unless you do something REALLY stupid-
well not at our power levels
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Old 02-08-2003, 10:05 PM
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Talking

no kidding.... trust me i do enough worrying for the whole forum about my car =]
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