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Old 04-16-2016, 02:59 PM   #8
Ski in NC
Technical Guru
 
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City: Wilmington, NC
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 6,194
Check oil temp at oil filter with an IR gun. Hot oil will mean lower pressure.

Have you changed the oil? Any difference in pressure?

Second that about putting on a mechanical test gauge as the electric gauges are notorious for being inaccurate.

My 450C shows about 5psi on the electric gauge at hot idle of 550rpm. Checked it with mech test gauge and it was 15.
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