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‘72 dt250 no spark?

  • cdawg
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‘72 dt250 no spark? was created by cdawg

I have a ‘72 dt250. Currently getting no spark. Just replaced the ignition coil and have continuity all the way to the magneto..what flywheel puller do I need and what should I look for once I get in there?? How many volts should I see on multimeter coming from the black wire? Thanks in advance
23 Nov 2022 11:57 #1

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  • AirborneSilva
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Replied by AirborneSilva on topic ‘72 dt250 no spark?

Sorry I can't tell you right off hand but the service manual that you can get in the Tech Library (see top of page), has that information in it.
1976 DT400C
1981 DT175H
1972 DT2 250
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23 Nov 2022 12:08 #2

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Replied by adguy2112 on topic ‘72 dt250 no spark?

Not what I have but most say get the motion pro puller. Points would be the first place I look. broken wires or with the outer insulation worn off and touching. Get a known good spark plug.
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23 Nov 2022 14:18 #3

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  • YamahaForumUsername
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Replied by YamahaForumUsername on topic ‘72 dt250 no spark?

Is the ignition turned on?
23 Nov 2022 14:52 #4

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Replied by run103 on topic ‘72 dt250 no spark?

Bypass ignition and off on switch on handle bars if there is one. Make sure the points are opening and closing and they are clean. Lots of times the cam on the flywheel chews thru the rub pad on the point follower and the points don't open. If that is the case you need a new flywheel without a rusted point cam. hope not
Doug
23 Nov 2022 15:18 #5

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Replied by MarkT on topic ‘72 dt250 no spark?

Yes, clean the points. #1 cause for no spark.

You may need to go back to original coil unless it was missing/damaged. Lots of people put on a new coil, fix the REAL problem, and then don't have spark because the new coil doesn't work.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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23 Nov 2022 16:27 #6

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Replied by Ht1kid on topic ‘72 dt250 no spark?

+1 MarkT
23 Nov 2022 16:35 #7

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