Water Pressure Too High

[RVM]

Hi everyone,

Running engines at idle today and the starboard coolant pressure was very high. RPM's didn't make a difference. Temperature on both engines were the same. 8.2L Mercruiser Seacore Mag, VesselView4. Any advice? (See photo)

Much Appreciated

 

[Espos4]

Hi everyone,

Running engines at idle today and the starboard coolant pressure was very high. RPM's didn't make a difference. Temperature on both engines were the same. 8.2L Mercruiser Seacore Mag, VesselView4. Any advice? (See photo)

Much Appreciated

Possibly a defective water pressure sensor to get a reading that high at idle.

swap them from port to starboard and see if the high pressure moves to the other motor.

 

[RVM]

Possibly a defective water pressure sensor to get a reading that high at idle.

swap them from port to starboard and see if the high pressure moves to the other motor.

that makes sense. I will try it. Thanks for the response

 

[66pony]

May also want to check for any obstructions, I had an heat echanger get plugged with sand and had high pressure at idle.

 

[Mike Baskin]

that makes sense. I will try it. Thanks for the response

i second this. just had the same problem and that was it.