Testing a starter solenoid

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05 Jul 2012 13:32 #534024 by Koki
Testing a starter solenoid was created by Koki
My bike turns over but won't start, so I bypassed the solenoid by arching the connections with a screw driver and the bike turned, but still didn't start. Is my solenoid good or bad?

1981 Kz750E

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05 Jul 2012 14:07 - 05 Jul 2012 14:15 #534030 by Patton
Replied by Patton on topic Testing a starter solenoid
With ignition switch ON, and pressing the start button turns over the engine, both starter motor and solenoid are likely okay.

The solenoid is basically a heavy duty electrically activated switch that allows full current to the starter.

If the engine spins over, but won't run, the reason it won't run is likely not related to the starter motor or the solenoid.

Akin to an engine without electric start, and only a kick starter, if the engine is kicked over with the kick starter, but won't run, the reason it won't run is likely related to something else besides the kick starter.

Good Fortune! :)

1973 Z1
KZ900 LTD
Last edit: 05 Jul 2012 14:15 by Patton.
The following user(s) said Thank You: Koki

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05 Jul 2012 15:33 #534046 by MFolks
Replied by MFolks on topic Testing a starter solenoid
Your engine has two systems at work when trying to start;

1.The starting system,made up of the starter motor, an electric motor designed to turn the engine over, with a solenoid,an as mentioned heavy duty relay, that conducts the high current(Amps) from the battery to the starter motor via large gauge cables.

2. The ignition system,designed to provide the spark at the right time to ignite the compressed fuel/air mixture so the engine will run. This is composed of ignition coil(s) and either ignition points or electronic devices replacing the points, doing the same job, to provide the spark at the sparkplugs.

1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)

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05 Jul 2012 16:51 #534058 by Koki
Replied by Koki on topic Testing a starter solenoid
Alright cool. Thank again for the info. Hopefully I'm heading in the right direction now xD

1981 Kz750E

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05 Jul 2012 16:52 - 22 Jan 2013 20:27 #534059 by martin_csr
Last edit: 22 Jan 2013 20:27 by martin_csr.

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