1997 mariner efi 175 0g549797
Noticed today while boat was idling tied up to dock. Water spitting out of the exhaust outlet in the lower cowling. Is this normal or does it need to be addressed?
1997 mariner efi 175 0g549797
Noticed today while boat was idling tied up to dock. Water spitting out of the exhaust outlet in the lower cowling. Is this normal or does it need to be addressed?
Well i just ran it on the muffs at home, and it didnt do it. Only exhaust gas coming out. Must have something to do with the backpressure running in the lake? Heres a pic of where the water was dribbling/spitting out of.20211121_132732.jpg20211121_132732.jpg
Last edited by jtipton91; 11-21-2021 at 03:00 PM.
It’s normal, some water goes into the exhaust and that outlet is the idle relief port. it won’t do it on the muffs because most of the exhaust goes out the prop. When the motor is in the water the water rises up the exhaust pretty high, this prevent the exhaust from going out at idle, thus the idle relief port. Some water goes out the exhaust to keep it cooler.
Mercury 2002 200hp Carbed Saltwater
OT566776
2002 Cape Horn 22' Bay
Last edited by EuropeanAM; 11-22-2021 at 03:45 PM.
Normal. Can also show on the hose attachment- but is much more common when in the water with back-pressure.
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
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