ok, here's a puzzle for ya'll. My 88 IROC (5.7) was stalling on deceleration and I could smell gas, took her to get smogged, she was 8 degrees ATDC. Took her to repair and retest, they adjusted timing to 6 BTDC. Passed smog but NOW, she stalls on acceleration...bad. I can get past first but on the clutch between 1st and 2nd she lurches and dies.