Looking for outboard ignition help

Discussion in 'Help Wanted/Job Wanted' started by fisher-jim, Aug 13, 2020.

  1. fisher-jim

    fisher-jim

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    Location:
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    I inherited an old Duratech Galaxy boat with a 1980 - 55hp Chrysler outboard. We got it running and had out a few times this year. Last time out, it was running fine and then started misfiring and then 1 cylinder went out. Back in the driveway, it was running good. Again on the water, same problem. Tried diagnostics we found in shop manual. Found it to be a problem with the bottom cylinder. Haven't removed flywheel. Looking for someone familiar with Chryslers and willing to check it out.

    Sent from my SM-G960U using Michigan Sportsman mobile app
     
  2. CL-Lewiston

    CL-Lewiston

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    I had a Chrysler 7.5 bought new in 1981. It was way too heavy to be a good anchor. It would start fair but then stall and never want to restart.

    My neighbor had one back in the late 50s and he loved it.
     

  3. georgeb

    georgeb

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    Did you use new spark plugs ? a plug fouling will not fire under load but will run at no load.

    sorry for the question if you did.
     
  4. fisher-jim

    fisher-jim

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    Yes new plugs. New coils last fall. Putting it away for now to focus on wading in rivers
     
  5. Big Frank 25

    Big Frank 25 Premium Member

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    What do the breaker points look like?
     
  6. textox

    textox

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    Check compression on that cylinder ,could be a water leak that shows up at full throttle under load.Drive way test only shows motor runs with no load on motor.Bad points will affect all cylinders.Swap a coil from another cylinder and see if problem follows to that cylinder..
     
  7. fisher-jim

    fisher-jim

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    Thanks, we will try switching the coils. Compression on both cylinders is the same @ 125 psi.
     
  8. Big Frank 25

    Big Frank 25 Premium Member

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    Put an ohm meter to the coils. Should bump the power up from what the two probes together read.