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manant

k341 electrical problem

By manant, in Engines

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manant    57

manant
Posted
:( I have a c161 that has not been started for two weeks.  Today I tried to start it would not turn over as if not enough battery power.  I hooked up a jumper to the battery and it started but ran for less than 30 seconds before stopping.  It was blowing smoke like it was running rich.  When I tried to start again I had no electrical power, no lights, no starter action.  After a few minutes passed I had lights again and the engine would crank but would not keep running as before.  I cleaned the carb to solve any rich running issues, but I am puzzled about the loss of electrical current.  I connected a multi-meter to the battery and it showed 12 volts.  I decided to remove the battery and put it in a charger for awhile anyway. Could the problem be with the rectifier?

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gwest_ca-(File Mod)    10,529

gwest_ca
Posted (edited)

Could be the rectifier but almost impossible to diagnose a system if the battery is bad.

When you reinstall the battery record the voltage at the battery.
Turn the lights on and after about 30 seconds record the voltage at the battery again and turn the lights off.
Try the starter and record the voltage at the battery while cranking.
If it won't crank record the voltage at the starter motor while trying to crank.
Let us know what you find.

This is basically a poor man's load test on the battery but should verify if the battery is up to the task.

Garry

Edited by gwest_ca
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manant    57

manant
Posted

Thanks for the input.  It appears to be a false alarm. While I charged the battery (even though it measured 12.5 volts), I checked the plug, points, and coil, and had already disassembled and cleaned the carb.  When I installed the recharged battery it started after a few cranks and ran fairly well until I readjusted the carb.  It runs fine now.  I am still puzzled at losing ALL power when I tried to start it before.  Not even enough to run lights?  I may still have a bad battery.  After charging it read 13.4 volts.  I kept the multi-meter on it and the voltage started dropping and stopped at about 12.5 volts.  If I have the problem again I will take the battery to the auto store and get it tested and/or replaced.

Thanks again

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manant    57

manant
Posted

The more I think about it I believe the problem must have just been corroded terminal connections. When it did not start the first time I noticed some corrosion on the + terminal.  I cleaned the connection externally but did not take the connection off to clean it.  That would account for the jumper not working and the lights not working. Plus the battery showed 12.5 volts.  When I removed the battery to recharge it I cleaned the terminals, and everything seems to be working fine now. I feel a little dumb for not thinking things hrough the first time.

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953 nut    51,976

953 nut
Posted
You are in good company, we all have those moments!:text-lol:

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