Phantom 25 Merc 450R - water pressure issue
05-14-2026 | 03:44 PM
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From: Norway
Phantom 25 Merc 450R - water pressure issue
Hi!
i hope you are well.
Got my Phantom 25 on the water last week. The water pressure starts to fluctate between 17 psi and 25 psi at 3500 rpm. Comes and goes. At 4500-5000 it still fluctates, now between 25-30 psi+. Temperature is stable around 150-160F.
Just did the 300 hour service. New thermostats, impeller, etc. Poppet cleaned and checked. The flucation startet just before we took the boat up for the winter, and I remember the sea was dark brown due to heavy rainfall.
What do you yhink? Sensor issue?
cheeers Toffen
i hope you are well.
Got my Phantom 25 on the water last week. The water pressure starts to fluctate between 17 psi and 25 psi at 3500 rpm. Comes and goes. At 4500-5000 it still fluctates, now between 25-30 psi+. Temperature is stable around 150-160F.
Just did the 300 hour service. New thermostats, impeller, etc. Poppet cleaned and checked. The flucation startet just before we took the boat up for the winter, and I remember the sea was dark brown due to heavy rainfall.
What do you yhink? Sensor issue?
cheeers Toffen
