runnin rich

[TurboBmw]

maybe a stuck open injector.

Thats correct ^^ or change you fpr or buy a ajustable one and bump down the fuel pressure..

[LS/Vtec]

I had this same problem. I swapped my ecu, fuel rail, fuel pressure regulator, engine harness, distributor. And then my injectors. After I swapped my injectors it went normal.

[mark11017]

How would I know? And doesn't the ecu dictate how much fuel pressure is sent?cause the ecu is stock forthe swap

fpr controls fuel pressure. my guess would be ecu unless the fuel pump is a walbro or something like that

could be your Map , or your Ecu . . .My car was running rich cus of the ecu and i had no 02 sensors . .

it runs rich when the o2s arent plugged in.. like real rich because the ecu sees no readings

[ManTyme]

Thanks for the info guys.... swap is stock no mods just header no CEL! Gonna try the ecu and injectors

[ls94civic]

g/l

[the jdmchop]

Sure it just aint burnin oil?

[ManTyme]

Blueish smoke = burning oil
Black smoke = running rich

At least that's what I've read on EVERY forum I've searched

I swapped ecu's and no longer smell the unburnt fuel...

Although it still blows a bit of black smoke at high rpms ONLY

[94EJ1OwnS]

^^ check the SparkPlug ? i remember my purple coupe was blowing black smoke due to old and bad sparkplugs . . .

[ManTyme]

Ill swap em out and see what happens

[ManTyme]

Ttt ctv

[AWDream]

to my knowledge the ECU can't dictate the fuel pressure, since that's a mechanical component. it modifies signal based off vacuum/load. the ecu shouldn't have much to do with it.

do you have an adjustable FPR? fuel pressure gauge? make sure the timing isn't retarded on the distributor, cams are both in time, and that the plugs are the right ones and not fouled.

[ManTyme]

Bump ttt still runningrich