- Buick Ownership
- 1994 Roadmaster Estate Wagon
This is my first ever forum so bear with me. I have a 1994 Roadmaster Estate Wagon with the LT1 engine. Real garage kept gem from my neighbor. Total enjoyment for 18 months. Until this May. My mechanic had to replace my optispark. He put two aftermarket ones and he still can't get a spark to cylinder #3. He replaced the ignition coil and the ignition module still not luck. He ran a diagnostic on his computer and the OBD I is fine. He tried to get an OEM Optispark but can't find one. Any ideas on where to get a quality replacement or an original? Or any ideas on why one cylinder is not getting the spark?