One problem related to fuel injection rail has been reported for the 1998 Buick Park Avenue. The most recently reported issues are listed below.
'98 park Ave 4dr. Engine backfired, lucky to get it started it sound like a hot-rod, but did not catch on fire, we replaced the fuel pressure regulator (diaphragm ruptured)$750. 00. We also,drove it home about 50 miles. I'd also like to add that we would not have drove it home with our 1 year old son if we knew that it was a potentially dangerous fire hazard. Thanks!.