1995 Buick Roadmaster Exhaust bacfire, right bank

1995 BUICK ROADMASTER
170,000 MILES • V8 • AWD • AUTOMATIC
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RAKERS11
  • MEMBER
  • 1 POST
I get exhaust bacfire after about 1 minute after starting during deaccelaration
Changed the distributor
Checked right bank compression at 450 PSI.
Noticed the AIR pump fuse was blown. Changed fuse. At startup it blew again. Could AIR pump be causing the problem?
May 17, 2009 at 7:55 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Yes the air pump could be causing it. Has the check engine light come on?
Nov 6, 2009 at 12:19 AM
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