Yanmar Quick Connect Coupling Issues

TomHall

Active member
Joined
Oct 19, 2020
Messages
34
Fluid Motion Model
C-28
Hull Identification Number
FMLT2738A111
Vessel Name
Dawn Patrol
Does anyone have any issues with the Coolant Hose Quick Connect Fitting coming loose?

The fitting is referenced on page 7-11 of the service manual.

This is the primary coolant hose that connects under on the port side of the engine, forward of the fuel filter that has the standard quick connect fitting. When operating the engine, it occasionally loosens up and leaks. I push it un until it clicks and then it works fine until it loosens again. I notice the issue when operating temp rises or coolant is in the bilge. Otherwise, my engine runs perfectly.

Has anyone experienced this issue before?
Does anyone have a fix for it?

Thanks!
 
Never had an issue. Not sure how much they cost, but maybe buy a replacement and pull the other one off. Sounds like a bad seal or clip. Keep the old one and try to figure out the issue and fix it. If you fix it you have a spare. Hopefully you won't have the issue again.
 
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