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  1. #1

    Default Johnson 115 timing help

    I have a jonson 115 and when I put the timing light on it on number 1 cyl its showing the timing Mark's in rear of fly wheel 180 off and it does this while running?

  2. #2

    Default Re: Johnson 115 timing help

    It's a 1979 with 1977 carbs on it

  3. #3
    Join Date
    Sep 2010
    Posts
    20,321

    Default Re: Johnson 115 timing help

    What are you calling the #1 cylinder ?-------Top on starboard side ?------Bring that cylinder to tdc and verify your timing marks and timing pointer.----Did you have the coils off the motor and made sure they are on the correct cylinder ?

  4. #4

    Default Re: Johnson 115 timing help

    Top right cylinder yes checked tdc all plug wires are correct as far as I c as n tell

  5. #5

    Default Re: Johnson 115 timing help

    Just replace cdi box took it out and it burned out number one so I just put a new cdi on it again got spark all cylinders wanted to check timing with light and its showing on the rear of fly wheel

  6. #6
    Join Date
    Nov 2011
    Location
    tennessee
    Posts
    4,669

    Default Re: Johnson 115 timing help

    If timing light has a "advance knob" turn it to zero.....
    Pappys Sales and Service
    Owner and Factory Certified Technician
    Former racer KDBA (Kentucky Drag Boat Association)

  7. #7

    Default Re: Johnson 115 timing help

    No knob on timing light just a button turn on and off

  8. #8

    Default Re: Johnson 115 timing help

    How does that motor run?

  9. #9

    Default Re: Johnson 115 timing help

    Runs ok at idle and I can get a full trottle out of the water but when I put it in the water it does not rev past 3 thousand rpm this is why I was trying to set timing to carbs but cant do that when shows 180 off the pointer ? Was runing good did a turn and and hit my wake and boat cut out lost power since then I changed a cdi and coil burned up a new cdi just put another one on last night got spark back all cyl and I'm about to go try to test all wires with timing light maby some one crossed one but I do not believe so I also checked tdc on num one last night to see if it shared a key dead nuts tdc so I'm still at a loss?

  10. #10

    Default Re: Johnson 115 timing help

    Well at it again put timing light on all cyl wires was sho I had a wire crossed so I switched those engine started running great timing light was on where it should be turned off boat to check things over and when I restarted it suddenly started running like ass now showing this timing Mark's 180 off is there a certain wire from cdi to under fly wheel that controls this 180 off situation that re occured on its own

  11. #11

    Default Re: Johnson 115 timing help

    Also showing no spark on 2 cyl ? On why its killing cdi boxes or at least showing symptoms like it is ?

  12. #12

    Default Re: Johnson 115 timing help

    Sorry last post of spark loss was my error on the timing light but still doing the 180 off stuff

  13. #13
    Join Date
    Sep 2010
    Posts
    20,321

    Default Re: Johnson 115 timing help

    Start the motor and let it idle.------Pull one sparkplug lead off at a time.-----Report what happens.-----If spark is out by 180 degrees the motor would not run at all !!

  14. #14

    Default Re: Johnson 115 timing help

    Just did that top left wire is the only one in the ball park of the gauge it runs but like ass and timing Mark's for number one and cyl under it same 180 off but yes its runs but like ass

  15. #15

    Default Re: Johnson 115 timing help

    It ran good timing Mark's were on for like ten mins of run I shut off start up a few mins later and the timing been off since rear of fly wheel from indicator

  16. #16

    Default Re: Johnson 115 timing help

    Can the timing control under fly wheel be messed up and still run? It's kind of the only option I have left checked and changed everything else several times

  17. #17

    Default Re: Johnson 115 timing help

    If some one could please advise me I'd appreciate it

  18. #18
    Join Date
    Sep 2010
    Posts
    20,321

    Default Re: Johnson 115 timing help

    Check the flywheel key.

  19. #19

    Default Re: Johnson 115 timing help

    Quote Originally Posted by Jldix View Post
    It ran good timing Mark's were on for like ten mins of run I shut off start up a few mins later and the timing been off since rear of fly wheel from indicator
    Model number please

  20. #20

    Default Re: Johnson 115 timing help

    Key is good num on lines up tdc

  21. #21

    Default Re: Johnson 115 timing help

    Model number 115ETL78C

  22. #22

    Default Re: Johnson 115 timing help

    Ordered a spark timing controller? I'll up date if any changes

  23. #23

    Default Re: Johnson 115 timing help

    Ready to stuff a rag in th gas tank and set it on fire!

  24. #24
    Join Date
    Sep 2010
    Posts
    20,321

    Default Re: Johnson 115 timing help

    It will start and run on 2 cylinders out of the water.----It will rev up fine on 2 cylinders out of the water.------Means nothing.-----Did the motor run fine for you last year / last month ?----What work was done on the motor ?-----What trouble shooting has been done other than -----" it must be the timing "---- assumption ?

  25. #25

    Default Re: Johnson 115 timing help

    Ran fine last week had a coil burn out then a cdi box replaced it twice then it ran fine for about ten mins timing was good shut off start then was running like trash checked the timing it jumps 180 off with no changes so seems to be something controlling the timing and or pulse coil is messed up

  26. #26

    Default Re: Johnson 115 timing help

    ???????????? Open to advice?????????????

  27. #27

    Default Re: Johnson 115 timing help

    Tdc is good spark is not sparking at or anywhere near tdc on any wire yes num one top right !

  28. #28

    Default Re: Johnson 115 timing help

    Not assumption fact from timing light timing jumped on it's own

  29. #29

    Default Re: Johnson 115 timing help

    Quote Originally Posted by Jldix View Post
    ???????????? Open to advice?????????????
    Hook your timing light to the orange wire (primary)of #1 coil. Top starboard.

  30. #30

    Default Re: Johnson 115 timing help

    If it is in fact 180* out,#3 would show tdc.

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