I detected that the "spark" appeared a bit weak, so I changed the ignition module with another I had in my garage. When I went to turn the key I heard a loud bang, and looked and saw that the side of the Upper Intake Plenum had blown a hole in the side...... Lot'* a smoke a little flame so I put that out..... I'm clueless, unless I had some raw fuel in the cylinders from trying to crank the engine and when I put a "good" module on, it backfired and blew the plastic plenum to pieces??
1991 Oldsmobile Ninety-Eight Regency Elite
1993 Buick Park Avenue (moms)
1998 Saturn SC2
2000 Buick Lesabre
2006 Buick Lucerne (moms)