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phase sensor repair


fubar guzzi

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2 hours ago, fubar guzzi said:

Just how important is the phase sensor+how do we test it?

As important as it gets. You cant fully bench test it. You can check the continuity and coil resistance but sometimes they work cold and then break down with heat when the engine gets to operating temperature. Generally when they fail the engine wont start. Incorrect phonic wheel to sensor gap can cause erratic running.

Ciao

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27 minutes ago, Lucky Phil said:

As important as it gets. You cant fully bench test it. You can check the continuity and coil resistance but sometimes they work cold and then break down with heat when the engine gets to operating temperature. Generally when they fail the engine wont start. Incorrect phonic wheel to sensor gap can cause erratic running.

Ciao

Yup.
Mine ran well cold, but as soon as it got warm started spitting, running erratically, eventually quitting altogether. Next mornings, cold, beautiful again. 
I eventually ohmed the sensor on the bench with a heat gun, and it opened every time at about 230*F.

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  • 4 weeks later...

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