My 98 has been sitting for a couple years, dragged it in the shop to get it going.
1-Replaced both batteries, cleaned the cables
2- replaced the lift pump as it was dead
3-replaced fuel filter
Had to use 4d40 to get it fired up, but it eventually started, running rough and smoking bad.
After running it for a bit It runs smooth now at idle and driving it slowly around the shop but you can hear the engine clatter get loud then back to normal. I cleared the code and it’s still off but the engine noise is still there coming and going.