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GCalo · 07-23-2004, 02:49 PM

Possible heat expansion in the steel of the muffler. It was very common in BMW's in the 70's.

Or possible problem with catylitic converters.

07-23-2004, 02:49 PM	#2 (permalink)
GCalo BenzWorld Member Date registered: Aug 2003 Location: N. California Posts: 152	RE: Crackling Noise under Car Possible heat expansion in the steel of the muffler. It was very common in BMW's in the 70's. Or possible problem with catylitic converters.