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Recent content by FrankMa

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    85 Johnson 70 HP no spark on bottom cylinder

    Turns out the timer base was OK. Found a better diagram that called out the terminals by wire color and it checked out OK. My original diagram showed a plug with a different configuration for the terminals. Anyway my flywheel key was sheared off and the power pack had no output to the wire for...
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    85 Johnson 70 HP no spark on bottom cylinder

    Thank you sir. I will report results when I get the replacement installed.
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    85 Johnson 70 HP no spark on bottom cylinder

    J70ELCOS
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    85 Johnson 70 HP no spark on bottom cylinder

    I do have a Clymer Manual that covers this motor. I read the ignition system troubleshooting section and based on the observations made so far I tried the sensor coil resistance test. Supposed to get 17 +/-5 OHMS. I got 11 across terminals A-D, 22 across B-D and 22 across C-D. It says if you...
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    85 Johnson 70 HP no spark on bottom cylinder

    My motor crapped out on me 6 miles out on Lake Erie the other day. It was first time on the water this year and it ran fine all the way out there until when I throtteld down I heard a grinding noise. Turned out that the starter gear was stuck up and engaged with the flywheel. Anyway after I shut...
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    70hp Johnson J70elcos blowing fuse.

    Everything works now. Not only did I run a deck screw thru the conduit. I ran it right thru the red wire right to ground. That fuse had to blow the instant I put that screw in. All I have to do now is replace the section of conduit I had to cut out and wrap everything up nice and add some...
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    70hp Johnson J70elcos blowing fuse.

    Well Mr. Old Salty Dog, your very first sentence in your first reply turns out to point to the true root cause. There turned out to be only one fat red wire going to the B terminal. So for the heck of it I took all the wires off the ignition switch and it still had the short. So I figured the...
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    70hp Johnson J70elcos blowing fuse.

    So if I disconnect all those wires and the fuse stops blowing, does that mean the ignition switch is bad?
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    70hp Johnson J70elcos blowing fuse.

    OK folks, here is my progress so far. If I unplug the big red connector the fuse blowing stops. So I took the control box off and split it and found it to be easy as Racerone said. I removed enough components in order to facilitate examining the wires and I couldn't find any that looked bad in...
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    70hp Johnson J70elcos blowing fuse.

    Old Salty, the plug you mention to disconnect, is it the red one with the wire snap on clip. About 1 inch diameter?
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    70hp Johnson J70elcos blowing fuse.

    Thank you gentlemen for your replies. This problem just showed up suddenly after trailering the boat to a small lake where we have a vacation rental. When I turned the key nothing happened. The battery is fine. The tilt trim works. I I took the cover off and found the blown fuse. There is...
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    70hp Johnson J70elcos blowing fuse.

    I disconnected the 3 wires for the rectifier and it still blows fuses. Is the control box hard to take apart and put back together? I don't see any rubbed wires between the control box and the solenoid.
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    70hp Johnson J70elcos blowing fuse.

    I see the other thread about the 90 horse motor. My problem is not intermittent. It blows as soon as I put a fuse in. The rectifier on this one is a little round thing with 2 yellow wires and one red one. Could it be the rectifier or do you think a short in the control box
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    70hp Johnson J70elcos blowing fuse.

    I see the other thread about the 90 horse motor. My problem is not intermittent. It blows as soon as I put a fuse in. The rectifier on this one is a little round thing with 2 yellow wires and one red one. Could it be the rectifier or do you think a short in the control box?
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    70hp Johnson J70elcos blowing fuse.

    Must be a dead short somewhere. It blows with all switches off as soon as I put fuse in.
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