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    Engine misfires above 3000 rpm

    Well my starboard engine has the same symptom as my port engine did last fall but carb is good on this one so here we go. 1988 marine power 350 rebuilt with 300 hours, starts and runs idles great. Good oil pressure runs 170 degrees. Will run up to wot (4200 but slightly over propped) and will...
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    Carb CFM question

    I have an Alura 35 with 2 Marine Power 350’s. My mechanic says the carbs (Holley)are 600 CFM and should be 650. In fairness he is not trying to sell me carbs, his point is the engines will run too lean and suffer. The boat is new to me, low time on rebuilt engines, I would replace the carbs if...
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    Marine Power 5.7 misfires after 1 hour

    Hi all, new guy here, thanks in advance for any ideas. I recently bought a Alura 35 with twin Marine Power 5.7 straight inboards. Issue: port engine misfires after an hour of run time. I did full tune up (no other issues just for baseline) including plugs, coil, caps, wires, rotors, oil change...
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