17 yz250 no spark found issue?

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2/1/2019 5:01 PM

So last weekend in Oakland my bike died on the line for practice and I completely lost spark.

I am following the manual and a Rocky Mountain YouTube video for reference. I have tested the kill switch, the coil, and the spark plug cap which all came out good.

The red flag I noticed when I tested the stator is (2. In the manual) the “charging coil 1 resistance”

The book says it should be 720.0 - 1,080.0 ohms
My test said only 7.2 ohms.

The part throwing me off is Rocky Mountain’s video result brought them kiloohms and mine did not. It should do it automatically like my coil and cap did.

Did I find the culprit?

Here is a photo of the multimeter I’m using and a link to the video I used for reference.


2/1/2019 5:06 PM

If you can read my shitty hand writing on this dirty receipt I had stuffed in my manual here are all the tests I did minus the kill switch Photo


2/3/2019 7:58 PM

Nobody knows? I thought this place was full of industry people and professional mechanics?


2/4/2019 8:36 AM

Looks like you may have a short or a bear wire or a bad connection.

Paw Paw


2/5/2019 6:13 AM

Check and see if your woodruff key is broken.


2/5/2019 1:13 PM

if you are saying what you are saying correctly than yes sounds like weak stator. 7.2 ohms is .0072 kiloohm. so you are testing wrong or your stator is toast.


2/14/2019 3:11 PM

Stator was bad. Tested another 250 and got the reading I was looking for. Replaced it and now she has spark again. Now I just need to make one of those spark plug hole dial bore gauges to set the timing. To those of you who replied, thank you.