09 GV250 EFI Wires from stator red hot
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Hi all,
my bike had been laid up some time and I’m trying to get going again.
With a new battery, the starter was working but it wouldn’t fire. With a new spark plug it’s come back to life.
However, between the stator and the regulator, the power wire (red and green) is absolutely red hot in seconds and the yellow wires are hot but not too hot to touch. I have followed some YouTube vids on testing the stator and regulator and believe the stator may have a fault.
Would this explain the issue or is it more likely a grounding problem (have made some effort to clean up where the coils meet the frame but may require more elbow grease!)?
Any help that anyone could provide would be amazing. Cheers!
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Normally when a stator fails the voltage will fall as a phase has burned out, to test the stator use a multimeter & touch the wires ie 1-2, 1-3,2-3 you should if it’s OK get a reading of something like 0.1ohm 0.2ohm 0 ohm something along those lines above 0.2ohm it’s most likely toast, the red & green wires are the dc output to the battery now if their over heating then its most likely the regulator has gone which means it’s throwing out to much voltage & due to the shunting effect of the battery will overheat, a quick check of the voltage going to the battery will show this anything above realistically 14.7v its the reg gone.
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Simon,
You’re an absolute hero. Thanks so much for your detailed instructions.
The yellow wires from the stator are all reading 0.1 on the multimeter.
The power wires from the rectifier are the ones that are roasting hot, but only up to the connection toward the battery- after that it’s reasonably cool. The battery was only reading 13.5-14 volts but there was a weird fizzing noise coming from the rectifier.
Visually, it looks pretty corroded and I am wondering that perhaps this was the grounding I was advised to check. However, from what you very rightly pointed out yesterday- I am going to guess the rectifier is buggered!
Thanks so much for your help- I owe you a few pints!
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GV250 EFI
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