59 Johnson no high speed throttle?

[roger56]

This project is wearing me out. After doing all tests suggested prior to woking on motor I my have to back up a little?
Did compresion and spark test I thought it was ok.
Rebuilt carb done.
Motor was running hot so I replaced the the Impeller and cleaned up lower unit.(Impeller was in pieces)
Installed new solenoid and tested all the wiring from battery to starter and key switch its working fine now.
Here is my problem No high speed throttle when I took boat out today. On my way back to the dock i remembered that issue with someone else.
With motor running I pulled the top plug wire and the motor died. Restarted with wire back on and pulled the lower plug wire it did not affect motor at all. Kept on running.
I am thinking Coil,Plug wire and what else could it be? there was a lot of fuel in water after shuting motor off is that from the one plug not firing?
Could the motor running hot for a time damage the coils or the wiring for the coils?

 

[nwcove]

Re: 59 Johnson no high speed throttle?

sounds like you need to look at the ignition. with that said, it shouldnt run hot if its running on one plug, and the impeller is doing its job

 

[roger56]

Re: 59 Johnson no high speed throttle?

It was running hot before I changed the impeller today and its working fine. Could any damage be done to coils in a short time running hot when I started this project that would change the spark to the plug?

 

[F_R]

Re: 59 Johnson no high speed throttle?

Yes all the fuel continued to go through that non-firing cylinder and out the exhaust, making a grand oil-slick.

No, an overheated engine wouldn't harm the coils unless it was so terribly hot that everything else is destroyed also.

What could the non-firing problem be you ask?

Spark plug
Coil
Breaker points
Condenser
Plug wire
Stop wire grounding out
Water in cylinder
No compression on bad cylinder (especially since it has an overheating history)

NOT the Carburetor!!!! But very extremely rare posible broken reed valve.

 

[roger56]

Re: 59 Johnson no high speed throttle?

Yes all the fuel continued to go through that non-firing cylinder and out the exhaust, making a grand oil-slick.

No, an overheated engine wouldn't harm the coils unless it was so terribly hot that everything else is destroyed also.

What could the non-firing problem be you ask?

Spark plug
Coil
Breaker points
Condenser
Plug wire
Stop wire grounding out
Water in cylinder
No compression on bad cylinder (especially since it has an overheating history)

NOT the Carburetor!!!! But very extremely rare posible broken reed valve.

So start testing in that order Plug Coil etc.?
I do not think its the compression tested it before repairs at 92 top 91 bottom.
It has new plugs.
Looks like new plug wires.
I have not pulled the flywheel But I think I may have to so I can check the coils, points etc.
What is a stop wire?
Like I said before I have to back up and check the spark to the plugs I guess. It could be the wire from the coil?
The overheating issue I noticed during the repair process and do not know how long it was like this before I corrected it.

 

[kfa4303]

Re: 59 Johnson no high speed throttle?

HI roger. The fact that you could pull the lower s'plug wire with no effect, means you're only running on one cylinder (the top cylinder). You'll need to pull the flywheel and rebuild the ignition. Don't worry, it's an easy job and you can get coils, points & condensers right here at iboats for about $20 each. Make sure you use (1/4" x 20 x 3") GRADE 8 bolts and washers with your puller as the stock bolts are insufficient. These links will walk you through the job.

http://www.duckworksmagazine.com/03/r/columns/max/07/index.htm

http://www.duckworksmagazine.com/06/columns/max/index6.htm

http://www.outboard-boat-motor-repa...on 3 HP 1952-1967 Ignition System Tune-up.htm

 

[roger56]

Re: 59 Johnson no high speed throttle?

Early in this project I did a quick check through the hole in flywheel and coils looked fine no cracks and they looked good as did the points they looked clean an new. Spark plug wires look very new also. Is there a testing process to find faulty part or is it just change the whole area (coils,points and condensers) and be done with it?

 

[kfa4303]

Re: 59 Johnson no high speed throttle?

Roger, you need to stop fiddling around and deal with the spark, or stop asking for help. The only way to do that properly is to pull the flywheel and inspect every component of the ignition. Simply, looking through the viewing window is not enough to tell what is truly wrong any more than opening the hood of a car and staring at the engine will diagnose a problem. We've all posted multiple detailed explanations as well as multiple links for helping you get your motor back on the water in each of your redundant threads. Don't ask for advice if you're not willing to take it. These old motors are quite simple to fix and maintain for yourself, if you're willing to do the proper procedures suggested herein the thread and within the links themselves. Please see the previous posts for methods on ignition testing and repair. It's all there, but you must READ them!!!!!!!!!!!

 

[nwcove]

Re: 59 Johnson no high speed throttle?

Early in this project I did a quick check through the hole in flywheel and coils looked fine no cracks and they looked good as did the points they looked clean an new. Spark plug wires look very new also. Is there a testing process to find faulty part or is it just change the whole area (coils,points and condensers) and be done with it?

i recently did some ignition work on my 57 5.5, looked through the inspection hole and saw one modern coil, and one original. the original had no cracks, but those need to be replaced. pulled the flywheel and found that the original coil was cracked on the underside, and the new coil only had the wire pushed on as opposed to screwed in, and it wasnt set flush with the mounting bosses. the wires almost always " look" new as they are kept out of the elements....but for $10 or so worth of wire they are well worth replacing. so, like kfa states, and in mho, the inspection hole is not a good way to diagnose an ignition problem, but more of an access hole to adjust the points.

 

[roger56]

Re: 59 Johnson no high speed throttle?

i recently did some ignition work on my 57 5.5, looked through the inspection hole and saw one modern coil, and one original. the original had no cracks, but those need to be replaced. pulled the flywheel and found that the original coil was cracked on the underside, and the new coil only had the wire pushed on as opposed to screwed in, and it wasnt set flush with the mounting bosses. the wires almost always " look" new as they are kept out of the elements....but for $10 or so worth of wire they are well worth replacing. so, like kfa states, and in mho, the inspection hole is not a good way to diagnose an ignition problem, but more of an access hole to adjust the points.

After taking a couple weeks away from the repair needed on motor I got back to it this weekend. I ended up changing coils condensers and points. Also changed the plug wires and plugs. Crossed my fingers and finally the motor is purring like a kitten. This motor has not run this good in years. Thanks everyone for all the help. Could not have done it without your help

 

[Daviet]

Re: 59 Johnson no high speed throttle?

Glad you got your problem solved, now go have some fun.

 

[kfa4303]

Re: 59 Johnson no high speed throttle?

sweeeeeeet! Happy boating. Vroom-vroom.......