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Discussion Starter · #1 ·
first was hearing a sizzling noise near starter solenoid. replaced it, now cant get a turnover. I may have to replace wiring harness. As to test its continuity, I have to remove the harness, but don't want to unless absolutely necessary. I got a new battery, checked fuses, still cannot start up. Any suggestions?
 

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first was hearing a sizzling noise near starter solenoid. replaced it, now cant get a turnover. I may have to replace wiring harness. As to test its continuity, I have to remove the harness, but don't want to unless absolutely necessary. I got a new battery, checked fuses, still cannot start up. Any suggestions?
You should probably go to the New Member section and introduce yourself. You will be more welcomed than someone just asking for help. That said, it's been my experience that the sizzling noise you described usually happens when some type of electrical component burns up. That's why people say the part "fried" I would visually inspect the area near where the noise was heard looking for burnt rectifiers, etc. Sometimes you will even be able to smell something burnt. This would be my first step before tearing apart things. Is the entire bike such as lights and other indicators dead or is it just not turning over? Let us know what you find.
 

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Discussion Starter · #3 ·
I was outside in TX, where it is always windy, no way to smell it, just hearing the sizzle. but, it would still turnover, until finally gave out with a sizzle and popping sound.
I did replace the starter solenoid which is where the sound was located, but still won't start.
 

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CB125T, EX250 commuter, Ninja 250 racebike, CBR250R(MC19), VF500F, CBR600RR, VFR750F
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Pull out multimeter and test voltages along flow of electricity from battery to starter. Where power disappears shows fault is between that spot and previous one that did have power.
 

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CB125T, EX250 commuter, Ninja 250 racebike, CBR250R(MC19), VF500F, CBR600RR, VFR750F
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no power, so have to do continuity only. I would have to disconnect the whole harness to test it. or make multiple cuts into every wire.
No power at battery? Those bastards sold you bunk battery!!! Should return battery and get one that has power. Please post photo of battery.

Don't have to cut wires to measure. Back-probe connectors along path between battery to starter to measure power. Or unplug connector and probe terminal inside.



This is 5-minute fix with multimeter (or less in many cases).
 

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Ace Tuner
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I may have to replace wiring harness. As to test its continuity, I have to remove the harness,

I would have to disconnect the whole harness to test it. or make multiple cuts into every wire.
You need to disconnect the whole harness, or likely most of it. Plugs (connectors in them) corrode and burn up more often than wires most of the time. All components have wires / plugs that connect to the main wire harness. You can disconnect components from the main harness and test all wires in the harness without removing it. And yeah, being outside in Texas for any length of time you might need a new wire harness.

S F
 

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CB125T, EX250 commuter, Ninja 250 racebike, CBR250R(MC19), VF500F, CBR600RR, VFR750F
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No need to disconnect harness right away. When tracing power from battery to starter, if you measure loss of power, then back up one connector and examine it closely for why power stopped there.

In this case, battery and starter cables are just connected backwards at starter solenoid.

This is how power flows when cables are connected properly (ignore colours for different bike).

  • power goes from battery to B-terminal of starter-solenoid
  • then goes to fusebox
  • goes across 20a main fuse
  • then power to ignition-switch
  • turn ignition-switch ON and it sends power to lights and arms START-button
  • press START and it activates starter-solenoid which connects B-terminal to M-terminal
  • M-terminal sends power to starter motor.


Here's what happens when you have battery & starter cables reversed at starter-solenoid:

  • power from battery goes to M-terminal of starter-solenoid
  • since there's no connection from M-terminal to anything else, power just stops, doesn't go to fusebox or reach ignition-switch, doesn't power lights when key ON, doesn't arm START-button, nada, zilch...

TO TEST AND DIAGNOSE THIS NO-POWER PROBLEM

1. Of course 1st test in any electrical issue is to test power-source: battery. If his battery is really bullocks with ZERO volts, then he should return for good battery



2. then, follow path of power to next junction: B-terminal of starter-solenoid


In this case, because cables were reversed, there will be ZERO VOLTS, NO POWER at B-terminal and ZERO power at fuse-box and ZERO power at ignition-switch and ZERO power to lights and ZERO power to arm start-button, and ZERO power to starter-solenoid when pushing start-button and NO CLICK and ZERO power to spin starter motor.
 

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Biker
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Well! u do know there is supposed to be another terminal on the solenoid to operate
the solenoid coil RIGHT?Did you hook it up backwards? when hooked up right, bat
voltage is on both sides of the 30 amp, then power goes to ignition sw which sends
power to ths solenoid that bridges BAT to the STARTER MOTOR and works the
ignition system too.
 
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