Picture Attachments Fixed? (18 Feb 2023)
Hopefully, the pictures uploads are fixed for the time being. Let me know if you continue to have issues. I am looking into a more permanent solution. Thanks for your patience. - Makotosun
[Help] with my '73 DT3 250, having ignition issues
- 19stuberd
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Replied by 19stuberd on topic [Help] with my '73 DT3 250, having ignition issues
I took the bike for a spin two days ago with my jerry rigged ignition setup and it went well! I had two hiccups: One was some backfiring which seemed to have been caused by my ground wire slipping off, and the other was the bike stopping dead which was because ... I ran out of gas. In both cases it was a quick fix and a solid 30 minute ride went off without a hitch. The next day I went to re-integrate the magneto back into the wiring harness when disaster struck.
I got most of the way through fixing the wiring and I thought I'd try checking for spark, but when I tried it I got nothing. I reverted all of my work back to the exact setup as before and still nothing. I was already really frustrated by this, but I did find one clue: At certain positions of the flywheel, I would have a normal resistance value but for others I would have total discontinuity. I have no idea why anything could have randomly changed between me riding the bike and working on it except for maybe the extreme cold that rolled in that night or MAYBE me pulling a little too hard on the wires from the magneto, but in any case I figured the flywheel would have to come off. I took RT's advice and cranked that thing to hell and back so taking the nut off was tough, and I'm afraid that amidst my frustration and my homebrew puller being on its last legs I may have damaged the source coil. I was taking the puller off and I saw about one full layer of slashed windings. Nice work Daniel.
So now I have to wait around to get a real flywheel puller and lament my impatience before I get the thing off and try to figure out what could possibly have changed between the bike running perfectly, it sitting outside overnight just like it always has, me rolling it inside, working on the loom, and it not sparking at all. I did also connect a good battery and test if the signals worked, which they did, in case that's relevant (but the headlight did not. separate issue.) I also cleaned the spark plug which had tarnished somewhat but that shouldn't have been an issue since the bike ran fine when stopped.
Puller arrives Monday. Stay tuned for updates! Thanks again for the replies and (perhaps premature) congratulations. Also @uncle al, I do appreciate the input! No advice is too basic for me, I do greatly value it all. I did check the oil and it's looking good to me.
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- MarkT
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Replied by MarkT on topic [Help] with my '73 DT3 250, having ignition issues
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- Ht1kid
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Replied by Ht1kid on topic [Help] with my '73 DT3 250, having ignition issues
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- 19stuberd
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Replied by 19stuberd on topic [Help] with my '73 DT3 250, having ignition issues
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- AirborneSilva
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Replied by AirborneSilva on topic [Help] with my '73 DT3 250, having ignition issues
1976 DT400C
1981 DT175H
1972 DT2 250
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- RT325
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Replied by RT325 on topic [Help] with my '73 DT3 250, having ignition issues
If you bought a puller that is too short can the crank bottom out before starting to thread in. Or is it trying to start but won't bite.
I looked back but can't see where i recommended a puller--if it was me, but have linked them in the past so hope i've not sent ya down the wrong path.
Also as i'm sure i've said--remove all washers to get the full puller thread used in the flywheel.
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- RT325
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Replied by RT325 on topic [Help] with my '73 DT3 250, having ignition issues
photos.google.com/search/_tra_/photo/AF1...EqnTZLzSq9HrD9SffUdD
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- AirborneSilva
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Replied by AirborneSilva on topic [Help] with my '73 DT3 250, having ignition issues
1976 DT400C
1981 DT175H
1972 DT2 250
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- RT325
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Replied by RT325 on topic [Help] with my '73 DT3 250, having ignition issues
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- AirborneSilva
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Replied by AirborneSilva on topic [Help] with my '73 DT3 250, having ignition issues
1976 DT400C
1981 DT175H
1972 DT2 250
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