MustangWorks.com : Ford Forums - View Single Post

Unit 5302 · 12-13-2001, 12:24 AM

Most of the time backfires are usually caused by lean running conditions, sometimes by ignition/timing problems.

Your exhaust is not directly related, but if it causes the engine to run lean, could be an indirect cause.

12-13-2001, 12:24 AM	#3
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Most of the time backfires are usually caused by lean running conditions, sometimes by ignition/timing problems. Your exhaust is not directly related, but if it causes the engine to run lean, could be an indirect cause.