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View Full Version : 30 exhaustburned flapper



STEVE KAYSER
07-13-2001, 06:00 PM
AM CURRENTLLY REBUILDING A BUDDIES 3.0 VOLVO. FOUND FLAT CAM LOBES AND A SPUN ROD BEARING.SEVERAL PISTONS WERE BAD ALSO AT THE PIN BOSSES. OWNER HAD REPLACED THE CIRCULATION PUMP AND FRESH WATER PICKUP PUMP LAST FALL.I SUSPECT STUCK THERMOSTATE MAY HAVE STARTED THE WHOLE THING.OWNER FOUND A BURNED PIECE OF PLASTIC AND A PIN IN THE EXHUST IN THE LOWER UNIT. IS THIS SOME SORT OF VALVE IN THE RISER OR WHAT? WHAT IS ITS PURPOSE? THANKS!!

STEVE KAYSER
07-13-2001, 06:10 PM
ALSO HAD THE BLOCK MAGNAFLUXED..OK. SOME SIGNS OF WATER ONCE IN #`S 1 & 4 CYLINDERS. MANIFOLD DOES NOT APPEAR TO BE CRACKED. MODEL YEAR IS 1996.

Greg Kelly
07-24-2001, 08:54 PM
The exhaust tube on some Volvo's have a flapper valve in them. It is located in the bellows between the transom shield and the outdrive. Maybe that's what it is.Greg Kelly

Greg Kelly
07-24-2001, 08:57 PM
" The purpose is to keep seawater from backing up into the exhaust after shut-down. I'll get the hang of this posting stuff, sooner or later. "