Smoke and Popping

[Cheng]

Ok i was driving yesterday with my buddy that has an mr2 and we were going on the freeway and i down shift i heard a pop and then i realize the big cloud of black smoke was behind me.  The popping of the exhaust i always hear when im in 1st or 2nd gear.  Is it my timming chain or what, and also sometimes when i sit a a stop light exhaust fumes would just come out of my car and it smells like shit.  I have to hit the gas to stop it can anyone tell me whats the problems i have on the sr20det

[DarkRaptor42]

I dont know what the answer is but id like to know too. My KA does the same thing but mine only does it when the engine gets really hot.

[kenfuji]

would be nice if you can decribe the smell besides shit.
gas, oil, anitfreeze??

the pop is usually from runing a bit rich after letting off the throttle.

[the3SecondJerk]

Is the MR2 a turbo? If so is the boost cranked up? You could be experiencing detonation....or the air/fuel ratio is off. It could be any number of things.

[i hate rice rockets]

i have that same problem....i mean wit the popping...not the smoking...but yea i have an N1 exhaust wit 2 1/4 pipng all round...and why does it fart(popping)...its like pop pop pop...sounds pretty funny... <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/tounge.gif" border="0" valign="absmiddle" alt=':p'>

[nurvcom]

My sr does pops some times and,at every,light my car smell like gas badd and I have black smoke I blowing though gas it normaly take 10 for me to get,to work and back home now,, it take 20 one way,


I changed maf with new unit reset tps to 0.455 volts tbody closed