I posted on this forum a while back a problem with the warning horn for overheat / low oil. <br /><br />I bought this boat last year and it ran fine no problems. <br /><br />This year it's been on the water on an idle only lake. After several minutes (15 -20) of idling around the lake the alarm horn sounds indicating low oil, or overheat due to lack of oil injection. ( The telltale flow is good under all engine rpms ) <br /><br />I discovered when the alarm first sounds I can make it quit by quickly throttling the engine to 3-4000 rpms - dropping it back to 2000 - and it will quit for a few minutes, then the horn will sound again. This sequence was repeated last week and is scary at the least, and annoying if there really is no problem. The oil tank is presently half full. <br /><br /><br />My question this time : Can protracted idling on this model of Johnson oil injected engine create this situation, ie. a low enough injection rate causing an overheat condition by underlubing during protracted idle speeds ? Or is it possible something else is going on ? This problem does not seem to be evident at engine speeds over 3500-4000 rpm. <br /><br />Last year the horn never sounded but I was on water where I was planing out pretty regularly and running 3500-4500 rpm. <br /><br />Sorry for this lengthy post but you have all been very helpful in the past. Thank you again for your help. <br /><br />Johnny
