black smoke???

[esco97civicR]

I'm about to trade my Ls swap for a jdm d15b... i met up with the guy and i saw him run and when he redline shifted a small cloud of black smoke splurted out... is that a sign of a bad motor??????

[boosted b]

why are u down grading to a 1.5. but anyway it was probably just a hard shift and if u didn't smell oil u are probably good cause usually it's clear blue smoke

[X-Runner]

Black smoke is fuel...

[rizzler]

unburned fuel

[esco97civicR]

kool thnx urbody!!! oh and im downgradn cus im movn to AZ and this motor won't pass emmissions ovr there...

[ash7]

no, black smoke means that the engine is not jdm and is about to end itself.

-jonathan

[redciv1]

unburned fuel
x2. If you look at high performance cars shifting hard they usually will have that common trait. Most engines run rich anyway on the safe side.

[Motivation]

same with diesels. just the unburned fuel.... but I guess that answer has been covered a few times already.