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    1978 Evinrude 70HP- Trouble starting/idling/bogging under load

    Muffs are for flushing mainly or doing small adjustments at or near idle... I would not tear down the engine until you check for good spark.
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    1981 Evinrude 15hp E15RCIS Prop

    Prop splines are frozen or corroded up. WD 40 or whatever penetrating oil you have with some mild heat on the prop portion. Careful with the heat because you have a rubber bushing. Once you've done that a little "hammer shocking" and pray. Work carefully and you might get rewarded. Sometimes...
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    1978 Evinrude 70HP- Trouble starting/idling/bogging under load

    Try this. Nice blue 3/8 crack.
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    1978 Evinrude 70HP- Trouble starting/idling/bogging under load

    "wet plugs" "starts and dies" "black fluid running from lower" Spark jump test....buy a cheap one, $15 at any auto parts store or get a nice one online. Could be one of many electrical issues. Rule out each thing and move on. Once running, take it out on the water and magically watch the...
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    1978 Evinrude 70HP- Trouble starting/idling/bogging under load

    Did you try a spark plug jump test or just see that it has spark?
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    Evinrude 55 1978 gearcase

    This is the breakdown of your motor, if it separated they would show it that way.
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    Fuel system

    When you run the motor does it clear up if you keep pumping the primer ball? What are your compression numbers?
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    Fuel system

    Fuel pump diaphragm must have torn or weeped. Must be smoking hard with all the pumping your doing.
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    Fuel system

    I agree, reading your statements....did you replace the primer bulb? Also, is the engine not running correctly?
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    Are vacuum hose diagrams available?

    I'm going to say it goes to both but it's an educated guess.
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    1983 25 HP Johnson hand wind starter scraping flywheel.

    I confirm, happened to me once but 3 small washers saved the day.
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    Stalling at Idle and Idle Speed

    Had a 20 ft Boston Whaler Revenge once....former owner let it sit for about 3 or 4 years and wasn't a guy that did much maintenance anyways. Took it out and for several trips it ran fine. Next trip not so much. Mess with the engine for a while than decided to hand pump out about 30 gallons of...
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    Stalling at Idle and Idle Speed

    Okay....your probably good then.
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    Stalling at Idle and Idle Speed

    Here's your two choices and I've done both. Figure out the tank dimensions, carefully cut it out, change the tank, re-install the cut piece of deck after sealing all of the edges and have a stainless steel beauty ring made and glue (marine 5200) and screw it down (stainless screws). If not...
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    1990 Johnson 15hp only start with carb disengaged

    No. In a barrel that's what they look like. What it wants is to be taken out on a boat.
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    1977 Evinrude 25hp

    Hard to follow... but if the area your talking about is where I think it is, it seems one of two things. 1st guess, your not completing the last step of the L&S or your timer plate under the flywheel is all gooped up or has blockage. Is it any of those?
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    1977 Evinrude 25hp

    I'm not sure of some of your terms...."cam" are you talking about the roller on the carb linkage? Like Racer says, in neutral it won't allow it. Whenever you mess with it you have to do a link and sync and there is lots of info online on how to do that.
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    Stalling at Idle and Idle Speed

    I know this sounds laborious but I would change out the tank.
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    I Know What Happened But Why?

    The black goo typically is your coils failing. Motor look like this?
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    I Know What Happened But Why?

    Model number? Year? Horsepower? Maybe it's a lawnmower....describe more please.
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