Original message
| dshadoan
 |  "gmpn120-5"
, posted Thu 3 Jan 13:10  
this goodman dependable 92 has developed strong smelling exhaust, like incomplete combustion, also flame in one burner not completely into burner. vent seems somewhat weak also. does exchanger need cleaning. can this be done by removing collector cover and vent blower at bottom of heat box. what's best to clean with if it needs to be done? thanks for any info. furnace has been trouble free for 6 years.
das
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