1963 Evinrude 10 hp / Ignition troubles

[75sting]

I have replace the coils, points, and condensers. The motor ran for about 20 minutes then it died. Thats when I noticed that I do not have any spark, I have change every thing out with some older parts that work fine in my Johnson. All parts work fine in the Johnson. Could there be a grounding problem between the mounting plate and the engine block? Any help would be great, I'm just trying to get the ol'girl back into running condition.

Thanks to all for the help.
LA

[cajuncook1]

Did you torque your flywheel to 40 ft lbs after you replaced everything? If not, you could have sheared your flywheel key. Pop off your flywheel and assess. While your there recheck your wires, points, condenser and coil for any damage or loose connections. The reason, I made the assumption I stated is that you where running for about 20minutes and now you have no spark.

[nwcove]

i agree with cajun, have a look at the things youve done. yer only missing one of the three ingredients for a two stroke to work. i had an issue with a 56 johnson....where i did a dissasembly, but didnt tuck one of the coil wires (green) away, and it chaffed through, just from pulling the cord to try to get it to kick. have you read the top secret files on how to bring an old motor back to life? lotsa good info and tips !!!

[nwcove]

i agree with cajun, have a look at the things youve done. yer only missing one of the three ingredients for a two stroke to work. i had an issue with a 56 johnson....where i did a dissasembly, but didnt tuck one of the coil wires (green) away, and it chaffed through, just from pulling the cord to try to get it to kick. have you read the top secret files on how to bring an old motor back to life? lotsa good info and tips !!!

[75sting]

The keyway is good. I did not retorque the flywheel after the installation. I have removed everything and reinstalled it about 10 times with the same results. The magnet on the flywheel is strong. I'm running out of thoughts of what it could be.

[cajuncook1]

Well, lets just step back a minute. I know you have stated that everything looks good and you have pull it out and check everything about ten times. Things are frustrating to you right now, so have a beer and I am going to ask a couple questions and make a couple of suggestions.

Questions:

1.) Have you verified a spark on both wires with a spark checker? (no not just putting the spark plug up against the motor to check if it sparks.) Gap it to about 1/4 to 5/16 of an inch and ground it to the motor. You should see good blue spark with a crisp crack sound). If you do not see that on both spark plug wires then you need to recheck the ignition system.


This is a picture of a spark checker (click on thumb)



2.) Are the plugs wires going to the correct cylinder? If they are the original wires then the plug wire going to the top cylinder will be labelled top with a small metal clip. If the plug wires have been replace with 7mm copper core wires then you can tell if the appropriate wire is going to the correct cylinder by using this diagram.

Click on the thumb for a better visualization:



3.) Since you have had all the parts out and reassembled a bunch of times, please verify that your points cam is place right side up. If it is not, then your timing will be off, so no spark. **There should be writing on the correct side of the points cam stating "top", mean that is the side that should be facing up**


- Please verify that your wires are not damage or bare in any way, because that will cause grounding and no spark.

- Please check that you have a points gap at 0.020 when the points shoe are at the top the points cam. Make sure that they are clean as well. Sometimes if someone puts too much oil or grease then the oil or grease contaminates the points...then no spark.

- Make sure that your ignition plate is securely screwed down and does not have slope are play.

- Make sure the coils are good. No visible cracks or bare areas. Insure the plug wires connecting to the coils are secure. Inspect the connection they may be fouled with rust or corrosion. To remedy that, just clip off 1/4 inch of the wire and there should be fresh clean copper there. Also clean the metal tip of the coil that connect to the plug wire.

Here is a link to a you tube video that show you how to check your coils using a multimeter.

http://www.youtube.com/watch?v=KT8rk5QWgS0


*** Please make sure your throttle selection is on start, so that you will see a spark when checking it.

Here is picture of a RD ignition plate, but it should serve as a good reference. Click on the thumb for better visualization.



Hope this helps and please update us with what you find. Sometimes the resolution is something simple, but we get frustrated and can't see the problem!!! We have all been there and its helpful when someone reminds to recheck the basics and most of the time problem is solved. (Been there!)