320 SD with 350 Mag Horizon Water Pressure

[gtstarr]

I had my boat put back in the water today after having the bottom painted. My water pressure has always been very similar on both the port and starboard engines, btw 2-16 psi. Tonight the starboard jumped to 25-38psi. Water pumping out the exhaust at idle looks the same at idle even though the pressure reading are so different. I’ve been reading various posts and wondering if the general feeling is water pressure sensor? I’d not the sensor how likely is it that there is a restriction in the system and can anyone provide guidance on where restrictions are common?
Thanks.

 

[Seapig]

I doubt that reading is even possible

I’d swap sensors side to side to confirm .

 

[gtstarr]

I swapped out the sensor today and back to normal readings. Thanks for the input.