jdmkid_82

I have a Jspec D15 in my EG and im having a problem with my car blowing out black smoke, not alot.. but enough to stain my purrty white rear bumper.It usually happens when its at a higher rpm..I wanna paint my car but i want to get rid of this problem first..What would be my common problems?

littlegreenb18

runnin rich

jdmkid_82

thats pretty much my guess to...how would i go about solving it?...or how do I do it by step?

sTEAMD_rICE

that **** happens alot.

jdm_bones

iTrader: (5)

Well what are you running on the JDM D15, give us a brief discription on this car! ie:Maybe no cat, FPR set at 50psi, CAI...

bmiller17

I'm havin the same problem....its definantly runnin rich..i hooked up my air/fuel ratio and at idle its pegged at "rich"....i just put in a rebuilt motor and it still does it...so could it be a faulty ecu?

existanzcivicb20

it could be your o2 sensor, spark plugs, spark plug wires, cap and rotor, fuel pressure it could be many things

existanzcivicb20

just start checking them out see how they look

cambopheonix56

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by existanzcivicb20 &raquo;</TD></TR><TR><TD CLASS="quote">just start checking them out see how they look </TD></TR></TABLE>

Yea there are a few possiblities. I would just do a basic tune up and see what happends.

jdmkid_82

ive done nothing drastic, NGK wires, plugs, and the basic headers and exhaust..stock intake...keep in mind that even before i added all of these..it still did the same...and i am running a cat and a new o2 sensor....

fmrprojects

fuel pressure too high. check to see what the pressure is at. should be somewhere around 36. and are you running a chipped ecu or stock?

Sandmaggot

D15B's tend to put out a lot of black. My friends did, mine does, and few others that I have seen over time. It happens. Wut kind exhaust are you running? All I can recomend is getting some kind of down turn for an exhaust tip pointing it away from the bumper.

SiYouLater

What exhaust are you running? Most of the time the angled exhaust will do that.

SOHC4life 96

Get some extension welded into the exhaust so that it doesn't sit RIGHT below the bumper. That's your problem. Your exhaust is to short and you're running rich.

bmiller17

say for instance one of my buddies was messin with my MAP sensor while my car was running??? anyway that it would mess up the ecu?

hplssone

your map sensor could have a lot to do with it running rich. A lot of piggyback systems change the resistance of the signal coming from the map or the iat sensor to change the fuel and ignition curves.

bmiller17

but what if i had replaced the entire motor professionally and it still does it?

jdmkid_82

for the setup i have.. what ECU should be running for the best results?...A P28?

jdmkid_82

jdmkid_82

for the setup i have.. what ECU should be running for the best results?...A P28?

morningstar

well no **** pendejo!!!! get the p28 and youll still puff out the same amount of smoke....we got rid of alot of smoke when we un fucked your whole wiring mess but i think we really need to trace that burnt wire back and see where it goes to....i know that ive seen coolant temp sensors that take a **** do the same also....itll be something small and stupid....ill see ya thursday so we can clean up that tranny ans finish up the h22 swap...if you want to help...later bro