<!--/* Font Definitions */@font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;}@font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;}/* Style Definitions */p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:12.0pt; font-family:"Times New Roman","serif";}a:link, span.MsoHyperlink {mso-style-priority:99; color:blue; text-decoration:underline;}a:visited, span.MsoHyperlinkFollowed {mso-style-priority:99; color:purple; text-decoration:underline;}span.apple-style-span {mso-style-name:apple-style-span;}span.EmailStyle18 {mso-style-type:personal-reply; font-family:"Calibri","sans-serif"; color:#1F497D;}.MsoChpDefault {mso-style-type:export-only; font-size:10.0pt;}@page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;}div.WordSection1 {page:WordSection1;}--> I know this sounds stupid... But have you checked the oil level? Low on oil will cause just what you are describing. Martin has a good suggestion. I had problems with my engine warning horn so I installed both mechanical oil pressure and water temp gauges. I put them inside the lazerette. Doug MountjoysvPegasusLF38 just west of Ballard, WA. ------ Original message------From: Hoyt, Mike via CnC-ListDate: Mon, Aug 10, 2015 09:18To: cnc-list@cnc-list.com;Cc: Hoyt, Mike;Subject:Stus-List 3GM30F Oil Pressure warning Oil changed in May. Used 15W 40Oil level checked July 22300 mile delivery to Cape Breton (Dundee then Baddeck) July 23 – Aug 2 Yesterday after running engine at 2800 RPM for approx. 5.5 hrs a “clicking sound” was heard in cockpit. Thought at first was from Ram mic but was still there once disconnected. Determined was coming from alarm speaker on Yanmar panel. Tapped panel and then Oil pressure light illuminated and alarm sounded. Shut down engine and sailed to dock (without crashing) At dock started engine and at idle no alarm or light. Revved up to 3000 RPM and the light started flickering and a sputtering sound from the speaker (the clicking sound we heard earlier) which was followed by full illumination of Oil pressure light and full alarm siren. Stoped engine and waited. A few minutes later retarted engine and had no alarm at idle, followed by sputtering and then full alarm at high rpms. Reduced RPMs to idle and alarm stopped and light turned off. Any thoughts? Boat is currently 3.5 hrs away by car so any parts will have to be taken with me in advance
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