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Results 1 to 11 of 11

Thread: Wont fire ?

  1. #1
    Join Date
    Jun 2010
    Location
    Brisbane Australia
    Posts
    76

    Default Wont fire ?

    Hi all well, I have a 1977 mariner 2 cylinder 60 hp now Ive re furbished from the skeg to the fly wheel but it just wont fire. Ive replaced the trigger, the CDI but its no giving a constant spark anyone have any thought thanks. Waz

  2. #2
    Join Date
    Sep 2003
    Location
    New Tripoli, PA, USA!
    Posts
    15,691

    Default Re: Wont fire ?

    WAZ up? with that.

    I suggest you beg or borrow a DVA meter setup and test what you have. Even at cranking speeds you'll get lots of good data.
    I bought an attachment for my existing meter that works well. Got it on Amazon for well under 40 bucks US.

    Electronic Specialties 640 Dva Adapter

    Jeff
    Last edited by fastjeff; 12-17-2017 at 06:39 AM.

  3. #3
    Join Date
    Jun 2010
    Location
    Brisbane Australia
    Posts
    76

    Default Re: Wont fire ?

    Hi back to my 60 hp mariner I have the complete workshop manual for this beast but even that cant help me. Today I changed the trigger , the CDI unit, the condenser new 12mm positive and negative wire and new lugs and had 3 batteries in line but still no fire ? I saw a healthy spark this arvo but then nothing so it looks like it might be an on and off again or something not connected cleanly I also ran 12mm earth leads from the starter to the motor to make sure of a earth but still no. Tomorrow my last hope Im going to disconnect the harness to the key and wire directly to a spare ingintion switch just maybe it might be the stop switch or something like that. When I find the problem i will let you all know just in case you ever come over the issue.

  4. #4
    Join Date
    Sep 2003
    Location
    New Tripoli, PA, USA!
    Posts
    15,691

    Default Re: Wont fire ?

    Be sure to disconnect (and toss out) the tilt switch IF it has one.

    Jeff

  5. #5
    Join Date
    Jun 2010
    Location
    Brisbane Australia
    Posts
    76

    Default Re: Wont fire ?

    Yep did that a few years ago I use a simple rocker switch for auto shop. Back to my motor to me it seems like I remember in old cars with the timing being a80 degrees out and that is what it feels like it has a great spark on the bottom plug it nearly killed me. I have been reading the electrical side but I think I have missed something in the mechanical ??? Any ideas Ive been trying to fire it up for a month now and changed all the conponetry bits

  6. #6
    Join Date
    May 2007
    Location
    Ireland,the only country in the world you can go North to go South
    Posts
    1,962

    Default Re: Wont fire ?

    I know you have done this,but I have to ask,did you check the plug leads are on the right plug?

  7. #7
    Join Date
    Nov 2011
    Location
    tennessee
    Posts
    2,997

    Default Re: Wont fire ?

    Single coil or dual coils????
    Pappys Sales and Service
    Owner and Factory Certified Technician
    Former racer KDBA (Kentucky Drag Boat Association)

  8. #8
    Join Date
    Sep 2003
    Location
    New Tripoli, PA, USA!
    Posts
    15,691

    Default Re: Wont fire ?

    Two strokes cant get "180 out".

    Jeff

  9. #9
    Join Date
    Sep 2010
    Location
    ontario
    Posts
    15,351

    Default Re: Wont fire ?

    Great spark and it won't fire ?---Check with a timing light and check flywheel key too.

  10. #10
    Join Date
    Sep 2003
    Location
    New Tripoli, PA, USA!
    Posts
    15,691

    Default Re: Wont fire ?

    Right! A sheared key will cause all kids of hell.

    Jeff

  11. #11
    Join Date
    Jun 2010
    Location
    Brisbane Australia
    Posts
    76

    Default Re: Wont fire ?

    Well it turned out to be the CDI unit anyway it started the motor almost immediately but the throttle was open open and I just couldn't get in the boat fast enough, the key nothing after 3 or 4 minutes I saw a cloud of white smoke pour out of the prop it was like everywhere so to stop it I grabbed the spark plug leads to stop it. So of course the motor was trashed. So now Im on the 2nd re build the frist one the flywheel had run off centre and welded itself to the crank shaft.

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