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  1. #1

    Default 1996 javelin 389 jonhson 175 sudden loss of power

    Sat i was running to next fishing spot and crossed over some choppy waters at 50mph when i suddenly lost power. Yhought maybe something came loose so i checked wires and plugs. No luck. It fires right up and idles fine but when put in gear and apply power is just boggs dwn. Its a 96 javelin bass boat with johnson faststrike 175. Always runs good and this is first issue ive had. It never overheated either. Shifts fine both ways as well. So yesterday i checked everything i can think of. No cracks leaks or any visual problems. Im totally stumped. Any ideas or suggestions on what else to check would be great.

  2. #2
    Join Date
    Nov 2011
    Location
    tennessee
    Posts
    2,581

    Default Re: 1996 javelin 389 jonhson 175 sudden loss of power

    Shift interrupter switch stuck?
    Pappys Sales and Service
    Owner and Factory Certified Technician
    Former racer KDBA (Kentucky Drag Boat Association)

  3. #3

    Default Re: 1996 javelin 389 jonhson 175 sudden loss of power

    Not sure never heard of it. Where would it be located at?

  4. #4

    Default Re: 1996 javelin 389 jonhson 175 sudden loss of power

    I did the spart gap test and found one cylinder had no spark, ordered new coil. Checked compression on all cyl and 100-110 on all 6. Hope this is it. Just surprised that it wouldnt have any power except at idle with only 1 cyl dwn.

  5. #5

    Default Re: 1996 javelin 389 jonhson 175 sudden loss of power

    Ok...got new coil in today and now No spark on btm 2 clyinders. Swapped out a coil that i know wrks and still nothing. What would cause only 2 clynders to not fire? Does anyone have a link for a wiring diagram on the coil system?

  6. #6
    Join Date
    Apr 2010
    Posts
    3,650

    Default Re: 1996 javelin 389 jonhson 175 sudden loss of power

    Go to cdielectronics.com for ignition troubleshooting.

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