Clinician
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Post by jspake on Mar 18, 2017 6:10:23 GMT -6
Hi there,
My 125cc Chinese scooter doesn't start with the electric start button. However, when I short the two starter solenoid poles together, the scooter starts fine. I replaced the solenoid itself, but the problem persists. So I assume there is something wrong with either the electric start switch or brake sensors.
I do not have the time to diagnose and work on it at the moment. So I plan to connect a simple button to the solenoid, which will short the two poles when pressed. Is this safe? I will probably use the solenoid bypass button to start the bike for at least 6 months. Will doing this frequently damage anything in the bike?
Secondly, I would appreciate if someone could give me ideas on how I could connect the button efficiently, and also the type of button to be used.
Any advice would be highly appreciate.
Thanks a bunch!
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Doc's Anything Goes
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Post by jct842 on Mar 18, 2017 9:11:07 GMT -6
Not good. It is not hard to trouble shoot. If it is your brake switch causing the problem scooter is not safe to be riding in traffic. There are simple diagrams here in our library. What you have is more than likely either bad switch or a connector.
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Doc's Anything Goes
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Post by jct842 on Mar 18, 2017 9:17:16 GMT -6
Get your multi meter out, set it to measure 12 volts DC.
With ign on You need 12 volts on one side of each brake switch. This is where the voltage to operate the start solenoid comes from.
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Post by jspake on Mar 18, 2017 15:41:27 GMT -6
Not good. It is not hard to trouble shoot. If it is your brake switch causing the problem scooter is not safe to be riding in traffic. There are simple diagrams here in our library. What you have is more than likely either bad switch or a connector. Thanks for your comment. It's not good in terms of what; safety or damaging the electrical components of the bike? Secondly, what connector do you mean? |
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Clinician
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Post by jspake on Mar 18, 2017 15:42:54 GMT -6
Get your multi meter out, set it to measure 12 volts DC. With ign on You need 12 volts on one side of each brake switch. This is where the voltage to operate the start solenoid comes from. I'll try that, thanks! Is there any way I could check if the electric start switch is working fine? |
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Doc's Anything Goes
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Post by jct842 on Mar 18, 2017 16:46:18 GMT -6
Should be 12 volts DC on one terminl with ignition on. Push start and 12 volts should be on the other terminal. All of the wires that hook up to the main wiring harness connect with a plug and socket usually white in color. They are not always making good connections and you need to check them. A tiny bit of Silicon grease on the pins helps keep them from corroding.
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Post by jct842 on Mar 18, 2017 16:47:40 GMT -6
No brake lights is real bad and could get you hurt or worse.
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Post by cyborg on Mar 19, 2017 13:01:37 GMT -6
A bad brake bulb can cause a no start issue as well,,,it's part of the brake circuit that starts the bike
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Post by jspake on Apr 29, 2017 6:43:49 GMT -6
Hi there, Referring to my previous posts, I found the problem to be a loose connection on the right brake. The brake lights do not switch on by just holding down the brake; I first need to position it at a certain angle. Consequently, I have first play around with the right brake for me to start the engine. Any ideas how I could do some tests (probably with my multimeter) to find where exactly the problem is along the connection from the brake? I would really appreciate your help  |
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Post by cyborg on Apr 29, 2017 7:32:39 GMT -6
Could be a wire broken internally
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Post by 2stroked on Apr 29, 2017 18:41:22 GMT -6
Pull the brake light switch from its little housing in the handle. Then see if pressing the plunger in works. Sounds like it could be a broken wire, a bad connection, a bad switch, or even the little cam on the brake lever that works the switch.
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Post by jspake on Apr 30, 2017 11:20:39 GMT -6
Hi,
Pressing the plunger in does not always switch on the brake light. I need to play around with the plunger for the brake light to switch on. How can I run tests to know what exactly is wrong with the bike?
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Post by jspake on Apr 30, 2017 11:21:32 GMT -6
Hi,
How do I find this wire? Are there specific tests I can do?
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Doc's Anything Goes
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Post by 2stroked on May 1, 2017 9:38:17 GMT -6
Well, if moving or wiggling the plunger makes the light come on, it sounds like the switch itself is bad. If it was me I would try jumping the two wires and see if that makes the light work every time. Brake switches are cheap and easy to replace, s get both at the same time t save on shipping.
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