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  1. K

    1973 18 hp evinrude Driver Coil test

    I did disconnect it just in case while troubleshooting, one thing I did notice kind of were was the wires from the points to the coil connector, they are like rubbery, not stiff as I would expect. Not sure if this is indication of bad wires but I'm going to replace them just cause they are...
  2. K

    1973 18 hp evinrude Driver Coil test

    Ok check Diaphram and we are good there, threw a timing light at it and swapped coils, problem did not follow top coil, it is the top not giving a light and every time it stumbles or does the miss we get a light from the top plug. Bottom light is on of rapidly until the stumble. So this tells me...
  3. K

    1973 18 hp evinrude Driver Coil test

    So I did do a carb rebuild on it early on, but did not check that fuel pump, as this issue just popped up last trip, so on the lake cruising 18 mph I start to hear the miss, so I slowed down and sure enough it was missing, when trying to turn it to WOT it would only go 5 mph. So we fished back...
  4. K

    1973 18 hp evinrude Driver Coil test

    Ok I will check these things, I ha e not checked the diaphragm, think that would cause this? I am gonna put new wires on too, I have spark to both plugs. So maybe I'll start with the diaphragm on the fuel pump.
  5. K

    1973 18 hp evinrude Driver Coil test

    So maybe that exciter coil? Or a bad external coil? I will take them off and test them.
  6. K

    1973 18 hp evinrude Driver Coil test

    Here is a video of what's going on, double checked the point gap, tested the condensers, checked spark, and we got good spark. Is the a fuel delivery issue? I did notice that the wire from magneto to top coil is turning green inside the connector, would a bad wire cause this?
  7. K

    1973 18 hp evinrude Driver Coil test

    Yeah, brand new coils, new points, new condensers, checked wire continuity. Do you think a condenser for the bottom hole went bad already. I will swap them and see if I get shocked again...lol good ole spark test.i have the old ones. Any way to test condensers?
  8. K

    1973 18 hp evinrude Driver Coil test

    Ok so weird thing today, took the motor out, started right up, idled great at the dock while I parked the car, took off we were going 18 mph as expected. Then after about 10 minutes WOT I started to hear a miss, slowed down and sure enough we were missing, went to turn it back up WOT would only...
  9. K

    20 hp Mariner No spark

    Yeah I get no reading from blk/yell to base, blk/wht gives me 141 ohms. I ordered a new one, I will report back of she fires up. Thank you guys for your input and advice, I am truly grateful for your knowledge and time responding to these threads. Thanks again.
  10. K

    20 hp Mariner No spark

    So am I doing that test correctly and can we confirm that is a bad Stator? Also that 2nd Stator for charging means this motor should have a starter? Which has obviously been removed.
  11. K

    20 hp Mariner No spark

    But shouldn't I get some kinda reading from that Stator? OL is not good right? Am I doing that test correctly? I am gonna order a DVA adapter and do that test but will be a few days. If Stator were cheaper I would just buy one and roll the dice, but they are pricey for a roll of the dice...lol
  12. K

    20 hp Mariner No spark

    Just continuity, I will put it back together and try DVA, I unplugged the kill switches, it has one in the end of tiller and one on the side of motor, I disconnected them and it still looked like no spark, I will check again and report back, and do the DVA test.
  13. K

    20 hp Mariner No spark

    This is how the chart reads
  14. K

    20 hp Mariner No spark

    Here are the specs I can find online. 78 - 94 row 339-7452
  15. K

    20 hp Mariner No spark

    The trigger assembly is reading within the specs I can find online.
  16. K

    20 hp Mariner No spark

    This is what I get on a ohm resistance on this part, 86704A10 - Stator Assembly, I get a .6 or .5 reading, cant find much on this part as far as what it should read. Any advice would be good.
  17. K

    20 hp Mariner No spark

    So I bought another project motor, No Spark is what I was told. Testing the components I think I found the problem. 86617A20- Stator, when testing ohms resistance from black/yellow wire to black/white wire is reading Open loop and when in the black/white wire and touching the plate part is...
  18. K

    1973 18 hp evinrude Driver Coil test

    It is running like a champ, 20 mph in a little chop, one pull to start. Very strong motor. On to the next one. I have a 20 hp Mariner that has no spark, but I will start a new topic for that one. Testing all ignition parts now.
  19. K

    1973 18 hp evinrude Driver Coil test

    Yeah, had plans on taking it out this weekend, but fam wants to go do something so it will have to wait til next weekend, maybe Sunday morning tho we will see. I'll let you know how it goes either way. Thank you for the input, I'm still green at this, but learning a lot of valuable info. Thanks...
  20. K

    1973 18 hp evinrude Driver Coil test

    Awesome I will do this, some time this week and let you know how it went, thanks again for the advice it is greatly appreciated.
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