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Makotosun

1969 Dt1-250 no spark

  • BDub
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Replied by BDub on topic 1969 Dt1-250 no spark

So with my meter set at 50 AC V I am reading 40 on the scale.  This is with the red wire of the meter inserted into the spark plug cap from the coil. Does that sound like the right voltage? I’m not sure if the photos I attached are going to make it through. 
26 May 2024 11:13 #21

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Replied by Gr8uncleal on topic 1969 Dt1-250 no spark

To post photos, you need to use a third party host such as Imgur.
26 May 2024 12:06 #22

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Replied by BDub on topic 1969 Dt1-250 no spark

I’ve attached a couple of pics and videos but basically it seems like I’m not getting enough voltage to spark but enough to activate an inline spark test light when spinning the motor with a drill. I’m guessing maybe the coil is bad? www.flickr.com/gp/200845087@N08/S2cUL3d4kJ
05 Jun 2024 07:27 #23

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Replied by MarkT on topic 1969 Dt1-250 no spark

I'm not sure what's going on with the "points open" and "points closed" pictures? 

Everything I see in your pics and video seems to indicate there's a problem with the points not making good contact?

1. Zero the meter on the RX1 scale
2. Reading with points closed should be zero.
3. Reading with points open should be around 2 ohms.

Yes, you are getting voltage but without the points working properly you have "generator" that can't create a spike of voltage to fire the plug.
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
05 Jun 2024 08:26 #24

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