buddycraigg
Recruit
- Joined
- Jul 15, 2004
- Messages
- 5
Hello all, great site by the way.<br />I am looking at a boat for someone and know very little about it.<br /><br />It’s a 1972 Johnson 100 V4<br />model 100ESL72R<br />SN 13685403<br /><br />Symptom is this.<br /><br />The boat was pulling skiers for about 2 hours.<br />While idling, the engine stalled with no warning.<br />Hit the key, the engine cranked over normal and started right up.<br /><br />Pulled skiers for another hour.<br />The engine stalled again, at idle with no warning, just shut off.<br />Hit the key, the engine cranked over normal and started right up.<br /><br />Pulled skiers for 15 minutes. <br />The engine stalled again, at idle with no warning, just shut off.<br />But now it would crank over normally but had no spark.<br /><br />Got the boat on the trailer and took it to a repair shop.<br />2 hours later the mechanic verifies that it has no spark.<br /><br />A few days later it ends up in my driveway. <br />I hit the key and the engine is running in less that one second of cranking.<br />I try 3 more times and the engine runs instantly.<br /><br />When he first told me the story I thought it was a heat related issue with an ignition component. But the second time he added to the story and mentioned the engine coming right back to life the first two times.<br /><br />So now what? Dirty contacts in the ignition switch?<br /><br />Also I am not familiar with the names of everything.<br />Like I keep hearing “power box” is that what I would refer to as “ignition module”<br /><br />Anyway would someone tell me what the ignition related parts are in these pics<br />And then how to test them if it does stall out again.<br />A schematic would be a great help as well.<br /><br />
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