Johnson 9.9 No spark

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hbryant123

Petty Officer 2nd Class
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Jun 18, 2012
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139
Just bought a johnson 9.9 with no spark, previous owner said it has a bad magneto. It's got good compression appears to be low hours so I wanna bring it to life! Under the flywheel I think I'm seeing a pick up and maybe a stator? I also found what I believe is a cdi box on the side. I'm looking for help to troubleshoot it. I have a voltmeter. Not sure exactly what to test or how. I've already checked the grounds and connectors also checked the kill switch. Any help is appreciated. Thanks
 
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hbryant123

Petty Officer 2nd Class
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Jun 18, 2012
Messages
139
Update. Tested all wires for continuity they check out. Under the flywheel I tested the brown pickup coil. Ac 0 dc 8 ohms 36.8. Green black coil ac 80-100v dc maybe 3 ohms 540. I have no clue how to test these so I tried all three methods. They readings were taken while I cranked the engine other than ohms. Hopefully someone can point me in the right direction. I dont wanna throw money at this thing blind.
 
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tomhath

Master Chief Petty Officer
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I had the same problem with my 1980 9.9 Johnson, lost spark on both cylinders.

I suppose it depends on how much your time is worth and how much you enjoy the troubleshooting. But the most likely cause is the ignition module, replaced mine and it fired right up.
 
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hbryant123

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tomhath said:
I had the same problem with my 1980 9.9 Johnson, lost spark on both cylinders.

I suppose it depends on how much your time is worth and how much you enjoy the troubleshooting. But the most likely cause is the ignition module, replaced mine and it fired right up.
Click to expand...

My findings are aiming me to that also. Did u get yours new or used ? I thought used would be best maybe made in usa
 
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boobie

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With out a service manual and a guess, I'd say a power pack is bad.
 
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hardwater fisherman

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hbryant123 said:
I tried using their site I think they charge for the troubleshooting service
Click to expand...

Sorry i do not know how to share a link. If you open up the cdi 5th edition trouble shooting guide it says that it is a payed service. But if you scroll down there is 125 pages of free info. Page 105/106 has dva and resistance charts.
 
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tomhath

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hbryant123 said:
My findings are aiming me to that also. Did u get yours new or used ? I thought used would be best maybe made in usa
Click to expand...

I bought new; figured the old one had lasted 38 years...didn't want to take a chance on a 37 year old used one.
 
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hbryant123

Petty Officer 2nd Class
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Jun 18, 2012
Messages
139
tomhath said:
I bought new; figured the old one had lasted 38 years...didn't want to take a chance on a 37 year old used one.
Click to expand...

Where is a good place to buy a new one? I seen some on ebay for about 70$ if I go new I want to be sure it's worth the price.
 
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racerone

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Go with factory new !!-------Cheaper than 1 hour labor fee at many good shops.
 
C

Crosbyman

Vice Admiral
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try to do some trouble shooting till you can no longer advance otherwise you may be spending money for nothing and...worst blowing a new part because the original problem was elsewhere :eek:

patience brings joy but learning has a price :frusty:
 
H

hbryant123

Petty Officer 2nd Class
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Jun 18, 2012
Messages
139
Thanks folks for all the info. After troubleshooting today I've found the problem to be the power pack. I'm gonna get one ordered asap.
 
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