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    Testing Gas Flow on 82' Wellcraft Sterndrive

    How can I go about checking the gas flow from the tank to the carb? I'm trying to chase down an issue of bogging out/spits at certain RPMs. If I disconnect the fuel line - post mechanical fuel pump - and turn the engine over, would this be an okay way of testing if the right amount of fuel is...
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    About to go insane about my 470!!

    Okay, got it. I'm also just thinking of buying fuel pressure tester. Unsure of how I'm going to tap into the hard fuel pipe from the pump to the carb.. :unsure: Anyone know what psi I should be pumping??
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    About to go insane about my 470!!

    Before I tare out the panels and sealant to get to my gas tank/line/check valve, Can I bypass all of this temporarily and hook up an external 5g gas tank with primer bulb directly to my fuel pump?
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    About to go insane about my 470!!

    Just looked at summitracing's website, when I put in "Carter Marine Fuel Pump" 4 results show up. I called and spoke with a tech, he couldn't dig up which one is for my engine. Do you know which of those 4 are for the 470?
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    About to go insane about my 470!!

    What should the proper compression be?
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    About to go insane about my 470!!

    Thanks for the replies. When I originally drained the gas tank, I did so by removing the main fuel line at the fuel pump, attached a coupler and a length of tubing running out of the boat into a bucket. I grabbed my compressor hose, blew into the gas fill-up with a rubber grommet and my air gun...
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    About to go insane about my 470!!

    Hi. New here. Hoping you all can help me out! I have an 82' WellCraft 20V, with the infamous 3.7L 470 (S/N#6161927). Starts great (warm or cold), idles great at 700RPM once warmed up, butt bogs down at 2100 RPM. Carb's completely rebuilt and adjusted (including choke, rods, float, jets, etc..(...
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