Maintenance And Repairs Questions & Answers More Maintenance and Repairs questions please visit : YesImAuto.com 1987 Chevy 4×4 305 TBI extremely poor timing? I hve a 1987 Chevy 44 Pickup with the 305 5.0.L engine equiped with the TBI system. It sit needing repair for over a year and a few months ago I replaced [...]