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Recent content by Berdink

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    Fuel additives for old Mercury outboards

    Ethanol free with Star-Tron at the end of the season is what I'm doing. If I know it's not going to set more than a month, then I feel okay using ethanol tainted fuel - but I use Star-Tron in everything.
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    Fuel additives for old Mercury outboards

    I wouldn't think draining the carbs would be enough with ethanol tainted fuel. I'm thinking purging the fuel lines and filter would also be necessary. Myself, I have access to ethanol free fuel.
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    1978 Mercury 70hp Worth Messing With?

    Thanks, it has around 130 on all three. I need to verify the health of the lower unit. Then clean up some of the corroded wiring. Currently it's missing spark on #2. I'll switch 1 with 2 and see if it's just the coil. But if it has a good lower unit and just a bad coil, then I feel like I can...
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    1978 Mercury 70hp Worth Messing With?

    I'll do a compression test and then check the spark with a 3/8" gap spark tester tomorrow. Then I'll remove the old fuel lines and see if I can run fresh fuel lines to the carburetor and see if it'll start.
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    1978 Mercury 70hp Worth Messing With?

    I tried uploading pictures. It's in decent shape and the wiring looks clean and no corrosion. The cowl decals are still nice bright colors.
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    1978 Mercury 70hp Worth Messing With?

    Assuming it has good compression. Assuming it runs and has a good lower unit. Is it worth keeping? It looks like parts are a little hard to come by than my Johnson.
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    Skeg replacement

    But if you do decide to get one of those stainless steel slip over ones, be aware that the dissimilar metals could create corrosion on your lower unit - especially in saltwater.
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    Successful Deletion of VST, Primer, & Fuel Pump

    Cool! . Do you have a electric fuel pump cut off for if the motor dies or the fuel lines spring a leak?
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    1983 Johnson V4 140 Low Compression

    I've contributed as much as think I know. 😁 I'm still learning myself.
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    1983 Johnson V4 140 Low Compression

    That's awesome!
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    1983 Johnson V4 140 Low Compression

    To assure myself, I tried 4 different ones. 2 had me at 90, 2 had me at 120.
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    1983 Johnson V4 140 Low Compression

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    1983 Johnson V4 140 Low Compression

    And it doesn't matter if it's a brand new compression tester, you need one with a Schrader valve at the piece that screws into the spark plug hole.
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    1983 Johnson V4 140 Low Compression

    You might go to Napa Auto Parts, AutoZone, any local parts store and ask them about the "Borrow a Tool" program. My compression tester was reading 90psi. I borrowed one from a couple stores and I got 120 with theirs. .
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    Sputtering and Dipping in RPM

    I was suggested to put your hand in front of the carburetors and see if gas is spitting back at you. . Another suggestion was to take them out and see if you can see light between the fins and the surface they rest against.
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