1996 Plymouth Neon Q&A
1996 Plymouth Neon Question: backfiring
spark occuring at the wrong time in the cylinder Roy - mastertech6371
A lean mixture either caused by a vacuum leak (air induction hose or manifold leak) or insufficient fuel delivery can also cause a backfire or hesitation on acceleration. - patrick mannion
Heard a pop/thump once every week or 2. When the pop/thump happens, it is during acceleration....