Smoooke

[XXX86]

I HAVE A 86 GN, RECENTLY REBUILT THE ENGINE,
I HAVE HEAVY BLACK SMOKE W/ A TINT OF BLUEISH-GRAY ONLY
WHEN GAS IS HIT OR SITTING AT A STOP LIGHT FOR A MOMENT
SAY A COULPE MIN. I HAVE THE ANCIENT ACCEL DFI, THE QUESTION SHOULD I TAKE IT IN AND GET TUNED ON DINO
BEFORE PULLING MOTOR AND GOING THROUGH THE ENTIRE
THING AGAIN. HAD NEW SEALS, AND PRESSURE TESTED
THE HEADS, HAD TURBO REBUILT, AND REPLACED NEW RINGS
CAN NOT SEE WHERE THE OIL SMOKE WOULD COME FROM
DROVE CAR FOR 500 MILES AND NOW ITS SITS IN GARRAGE
TILL I COULD FIGURE WHAT TO DO, ON THE HIGH WAY , NO SMOKE ONLY BLACK (RICH) WHEN PASSING, AND COMING OFF
THE HIGH AND SITTING AT THE LIGHT WAITING W/ THIS SMOKE
BARRELING OUT THE PIPES OF THIS BEAUTIFUL CAR!!!!!
AND YES ITS PROBALLY A DUMB QUESTION??

 

[MeanBuicks]

Certainly sounds like a fueling issue with your tuning. Have someone familiar with the DFI system try to correct it.

PS. Kill the CAPS LOCK. It's bad message board etiquette which means you're yelling.