My 1994 Coach has a mysterious vibration behind the frig whenever the generator is under a load. Anyone ever experience this? All looks well with the visible parts of the generator exhaust under the coach.
If your exhaust exits through the roof you might check the bolt that holds it tight at the top. Mine has a bolt and nut that holds the inner pipe in place.
Dean
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1993 Newell 45'#316, 1976 Trans Am 455, 1967 GTO, 1953 Chevrolet 3105 (panel truck),1952 Chevrolet 3600,1969 Airstream Overlander. Always fixing something!