Logo
Results 1 to 8 of 8
  1. #1

    Default 1988 Johnson 40 stator question:

    Motor: 1988 Johnson 40 J40TELCCS

    Question:
    Once the flywheel is pulled what all should I go ahead and replace while Iím in there?

    Reason/backstory:
    2020 - Bought the boat and motor. Rebuilt fuel pump, carbs, new fuel line and bulb (not the gray line), water pump, etc. Ran great

    2021 - noticed loss of power at beginning of season (4-5mph). Signs of bad powerhead adapter gasket with oily mess leaking down side of midsection and possibly water getting into a cylinder (bottom plug very clean). While on a trip the motor overheated and would die. Cool off and restart. Couldnít get past 3300 rpm. Discovered the head gasket had failed and a chunk had broken off and blocked the water flow passages.

    Replaced head gasket
    New power pack and ignition coils and rectifier

    Didnt get a chance to test after that work.

    2022 - Same problem persists: canít get over 3300rpm. Went ahead and rebuilt the carbs. Same issue. Tried a new power pack. Same issue. New plugs. Got good spark (jumps the 7/16Ē gap). So Iím thinking stator.

    Just want to make sure I change out what needs changed out with the flywheel removed.

    Thanks for the help.

  2. #2
    Join Date
    Sep 2010
    Posts
    24,027

    Default Re: 1988 Johnson 40 stator question:

    Overheating ???----Do a compression test before you spend any more beer tokens !!----Post your test results.

  3. #3

    Default Re: 1988 Johnson 40 stator question:

    Quote Originally Posted by racerone View Post
    Overheating ???----Do a compression test before you spend any more beer tokens !!----Post your test results.

    Thanks for the reply. I had typed this up once before but lost it and didnít realize I forgot to mention the compression test the second time typing. 130psi in both cylinders.

  4. #4

    Default Re: 1988 Johnson 40 stator question:

    Quote Originally Posted by jdrake83 View Post
    Thanks for the reply. I had typed this up once before but lost it and didnít realize I forgot to mention the compression test the second time typing. 130psi in both cylinders.
    I should add that when it overheated last year it definitely smelled like something got cooked. Hard to remember exactly what it smelled likeÖwasnít exactly electrical smelling but it wasnít normal exhaust odors. Makes me wonder if it was the epoxy or something on the stator coils. The guts under the flywheel is the last thing on the motor ignition system that isnít new (after the overheating) so I figure it canít hurt to swap the stuff out and go from there. Just want to know what all should get attention while the flywheel is off.

  5. #5
    Join Date
    Sep 2010
    Posts
    24,027

    Default Re: 1988 Johnson 40 stator question:

    I had a motor overheat once.-----I replaced entire stator and it worked great after that.

  6. #6

    Default Re: 1988 Johnson 40 stator question:

    Quote Originally Posted by racerone View Post
    I had a motor overheat once.-----I replaced entire stator and it worked great after that.
    Thatís good to hear. Not that our weather in central IL has been prime fishing weather but itís been very frustrating when we get a rare good one and Iím working on a boat motor instead of being on the lake.

    So to my question: while the flywheel is off what should get replaced? lubed? etc.

    Cheers!

  7. #7
    Join Date
    Dec 2012
    Location
    newport news, va
    Posts
    315

    Default Re: 1988 Johnson 40 stator question:

    three thing under flywheel, stator for charging battery, charge coil and ignition sensor, over the years had 2 bad charge coils, any black or brown goo under them, change them. along time ago , i had over heat problem, had 140 compression, did all your doing, finally removed head and found head gasket problem, good news removing head easier then changing thermostat

  8. #8

    Default Re: 1988 Johnson 40 stator question:

    Quote Originally Posted by scalhoun506 View Post
    three thing under flywheel, stator for charging battery, charge coil and ignition sensor, over the years had 2 bad charge coils, any black or brown goo under them, change them. along time ago , i had over heat problem, had 140 compression, did all your doing, finally removed head and found head gasket problem, good news removing head easier then changing thermostat
    Thanks for the reply. Sounds like we did the same stuff but in reverse order. I had actually changed the thermostat already when I got the motor since I wasnít sure how old it was and I figured it wouldnít hurt. Definitely a pain on this motor compared to later years. Iíve just never messed with anything under the flywheel so thatís helpful. Thanks!

Similar Threads

  1. 1988 Johnson Remote Control (0397184) with 1988 Johnson J20ECCA Question
    By emilkob in forum Johnson Evinrude Outboard Forum
    Replies: 3
    Last Post: 05-04-2017, 07:01 AM
  2. Stator voltage for 1988 Johnson 90 HP V4
    By CarMech1969 in forum Johnson Evinrude Outboard Forum
    Replies: 3
    Last Post: 10-12-2016, 10:05 PM
  3. 79 Johnson 115 stator question
    By 78 Mark Twain in forum Johnson Evinrude Outboard Forum
    Replies: 4
    Last Post: 04-11-2012, 09:26 PM
  4. Question about stator wiring on Johnson/Evinrude 90hp motor
    By Roxanne Holton Geller in forum Johnson Evinrude Outboard Forum
    Replies: 1
    Last Post: 06-14-2011, 07:58 PM
  5. 1988 Johnson 225 no power stator
    By Ste in forum Johnson Evinrude Outboard Archive
    Replies: 4
    Last Post: 12-20-2003, 07:23 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •