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  1. #1

    Default 1987 Johnson 140 V4 Stalling...

    Hi, I'm in need of some help analyzing why my 140hp Johnson is stalling under 2500 rpm. It runs above 2500 rpm, but will stall immediately when throttle is reduced. It used to stall at idle every now and then, but never a problem at any increased rpm beyond idle. This new stalling problem also happened very suddenly, not gradually.

    Also and importantly, when I removed the air silencer cover to have a look at the carbs, there was lots of fuel in the carbs and a lot of fuel dripped down and collected in the cover. So much so, that fuel was leaking down into the lower cowling and down the midsection.

    Does this sound like I need to do a carb cleaning and/or rebuild? I tried to find this problem/solution in the Top Secret File, but to no avail...any help would be much appreciated. Thanks.

  2. #2
    Petty Officer 1st Class
    Join Date
    Apr 2011
    Location
    SW FL
    Posts
    290

    Default Re: 1987 Johnson 140 V4 Stalling...

    You should clean & kit.
    Soak and blow out passages.
    Needles are not seating properly.
    After carb job you should see no
    gas running or dripping out.

  3. #3
    Supreme Mariner
    Join Date
    Feb 2001
    Location
    Port Charlotte FL but never the same since hurricane Charlie
    Posts
    16,978

    Default Re: 1987 Johnson 140 V4 Stalling...

    Be careful about running that motor with the air silencer cover off. It'll lean out pretty easily. That will ruin more than just your day.

  4. #4

    Default Re: 1987 Johnson 140 V4 Stalling...

    Thanks Dhadley and Big flop. Do you guys think I may have a VRO pump problem? I'm starting to think I might since there is mixed fuel in the fuel filter...shouldn't the filter be clear with just straight gas?

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