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    1993 Mercruiser 4.3 2bbl carb running out of power

    Took this pic at the start and by the look on my face I was still a little apprehensive. Had a great 5 hour day on the lake. Ran tip top. Suspect it was the fuel pump from the start but didn't hurt to freshen it all up.
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    1993 Mercruiser 4.3 2bbl carb running out of power

    Flame arrestor was as clean as a whistle. Choke operation works as it should. My fingers are crossed but I truly believe the fuel pump was an issue. Though I only use the best premium fuel or marine fuel at the dock, I hear horror stories about ethanol now found in fuels and the effects on older...
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    1993 Mercruiser 4.3 2bbl carb running out of power

    as i mentioned, I did compression test with results of 150 PSI across all cylinders evenly. Replaced spark plugs, rotor, dist cap, anti siphon valve, inline fuel/water separator as it had been a while. Still had issue with lacking power above 2500 RPM. Playing with the throttle and able to...
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    1993 Mercruiser 4.3 2bbl carb running out of power

    carb rebuilt, anti siphon valve replaced, cap rotor and plugs replaced. going to makeshift some sort of setup to connect a fuel guage to check pressure, if ok then back out to the lake for the test.
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    1993 Mercruiser 4.3 2bbl carb running out of power

    fresh disassemble. Carb spotless. Hesitant to soak carb in Pinesol as seen online. Considering spraying with carb clean and blowing everything out with compressed air before reassembling with new parts. You mentioned the anti-siphon valve. Is that located in the tank.
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    1993 Mercruiser 4.3 2bbl carb running out of power

    Thank you for your reply Scott. I'm kind of a over maintenance type. I use the boat 2 or three times a year. touching wood, never had any issues of any kind. kept in heated garage, fuel stabilizer in off season. octane booster with first tank each year. Use fuel treatment regularly. You...
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    1993 Mercruiser 4.3 2bbl carb running out of power

    1993 Searay 180 BR sat indoors as usual through summer. Purchased brand new and kept in pristine condition with less than 200 hrs due to lack of use. First time out this summer I noticed some hesitation and very intermittent and random backfiring under load. was able to cruise at slow speeds no...
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