Mystery Motor Good news and Bad News

[sevanseriesta]

Well I have this 1970 Johnson 115hp motor that I got for my ps3. I thought that was a steal even if it did not run came with boat controls also. So tonight I thought I got all the wires reconnected so I decided to check the compression. Here part of the news

158 158 162 158

I was estatic. So much that I went and borrowed another Compression check tool to verify mine was working correctly. No changes.

Bad news, No spark. And since I dont have a book for my motor I have no idea where to start. Ignition pack looks brand new. everything else no idea.

Im glad I dont have to rebuild the motor. I thought for sure a ring land or a rod would be broke.

Still have not tested water pump yet. Baby steps, they always say take baby steps.

 

[sevanseriesta]

Re: Mystery Motor Good news and Bad News

Anyone got any ideas that I can check before I have to start buying parts?

 

[AlTn]

Re: Mystery Motor Good news and Bad News

you realize a factory workshop manual is really a wonderful thing..short of that all I can point you to is cdielectronics.com/troubleshooting, find your ignition system, and commence in

 

[sevanseriesta]

Re: Mystery Motor Good news and Bad News

Yup still working on getting one. Just seeing if anyone can help while I wait for it to get here.

 

[HighTrim]

Re: Mystery Motor Good news and Bad News

You dont have spark to any cylinder?

have you tried disconnecting the black/yellow wire at the pack and re testing? It is the kill wire.

 

[sevanseriesta]

Re: Mystery Motor Good news and Bad News

I dont have any spark to any cylinder, and I can not find the black yellow wire anywhere. Where exactly should I be looking for it at.

 

[HighTrim]

Re: Mystery Motor Good news and Bad News

Did you look at the site provided by ALtn? It is pretty thorough

http://www.cdielectronics.com/downl...972 100-125 HP (With 113-8362 Power Pack).pdf

 

[sevanseriesta]

Re: Mystery Motor Good news and Bad News

I did, but again I do not have the manual for the motor so I am not sure where the items that are on that sheet are located at. I do appreciate the information, hopefully when I get the book all that will make much more sense.

 

[sevanseriesta]

Re: Mystery Motor Good news and Bad News

And by the way I have looked at my motor three times and I can not find a black wire with yellow stripe anywhere. Is this wire coming from the boat controls. If so keep in mind that the motor is not connected to anything right now.

 

[Davem3]

Re: Mystery Motor Good news and Bad News

ummmmmmmm, yes by all means hook up the controls please.............

 

[sevanseriesta]

Re: Mystery Motor Good news and Bad News

I thought you did not need the controls hooked up to test compression and spark

 

[Davem3]

Re: Mystery Motor Good news and Bad News

compression, no.......... spark and running the engine, yes ...............

 

[sevanseriesta]

Re: Mystery Motor Good news and Bad News

So then would I be correct that, the key needs to be in the on position. Or should I start it with the key instead of jumping it

 

[boobie]

Re: Mystery Motor Good news and Bad News

This mtr has no black/yellow wire coming from the pack. It's battery cd. The key has to be on to feed B+ voltage to the power pack which makes the system fire.

 

[sevanseriesta]

Re: Mystery Motor Good news and Bad News

Thanks Boobie Appreciate the reply. I was getting ready to take off the Flywheel so now I have to find a socket the right size to torque it down.

Also does anyone know what the right oil/fuel ratio is for a 1970 johnson 115hp

 

[Daviet]

Re: Mystery Motor Good news and Bad News

Ratio is 50:1

 

[boobie]

Re: Mystery Motor Good news and Bad News

Socket 1 5/16 ". Torque 100-105 ft-lbs.