Hi All,
Thanks Charlie B for helping the French guy!
175HP Carb (jet boat/drive)
There are 6 recirculating hoses that seem to run from crankshaft area to piston heads.
At the piston head section, middle piston, one hose had fell off, slit with dry rot.
I snipped it and upon refitting to...
1997 Searay Searaydar FX16, with Merc SJ 175 XR2 that was rebuilt in 07 with a 2003 powerhead.
Dual Carb (not efi)
Last 2 summer seasons it ran well, except for sometimes it would be a bit finicky to start, toggling the throttle worked.
Over the winter(SC coast) I started engine about once...