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    Engine Alarm

    I have a Formula 2002 330ss with dual 6.2's. Recently I have had a double beep every 60 seconds alarm go off. Computer analyzed 555 EMC program shows zero water through the port engine. False reading based upon engine temps 5x5 and direct feel hands on temp for both motors . Alarm goes off at...
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    Alarm

    I have a 2002 Formula 330ss twin 6.2's. Just recently an alarm, two beeps every 60 seconds, started. Unfortunately, this alarm at two beeps per 60 seconds could be about 30 different problems. I had it computer analyzed ECM 555. Results showed zero water flow on the port engine, however, we know...
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    Mercruiser power valve

    I have a 2000 Maxum SCR with a 220HP, 5.0L, 305 CID engine. I bought the boat at 200 ft elevation. Now run it at 6100 ft elevation. Stock main jets are 165's, stock power jet is a 90. At 6200 ft elevation I am putting in 150 mains and I need to know what power jet to install. Calling Merc Marine...
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    High altitude timing

    I have a carbureted 5.0L G+ Alpha Mercruiser 220 HP 305 cid sterndrive engine. Thunderbolt ignition, ignition timing 10 degrees BTDC. Run at 6000 ft elevation. ​Stock main jet 1.65 mm changed out to 1.45 mm. Power valve stock jet .90 changed out to .74 Stock gear ratio of 1.62:1 changed out to...
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