The most obvious symptoms of a bad motorcycle stator include
no spark, weak spark
, or intermittent spark (also known as misfiring). Hard starts and a poorly running engine can also be clues that your stator needs to be rebuilt or replaced.
What causes a stator to go bad?
To answer why stators fail, it is because
the coating on the windings breaks down, usually because of heat
, causing a short which can also burn the fine wire of the winding in two at the short causing an open circuit. The way to prevent failures is to prevent the heat.
How do I know if my stator is working?
Insert
each probe into a stator socket. You should read around 0.2 to 0.5 ohms. If you show an open circuit with the “Open” or infinity reading or have higher resistance, then the stator is bad and you must replace it. If these tests all produce positive results, then the stator itself is good.
Can a bad stator drain a battery?
As far as the battery,
yes a bad stator/regulator can destroy a new battery
. If it’s run at a very low voltage without being recharged then it can be destroyed. It actually happens all the time. In most cases if we replace a stator or regulator the battery has to be changed as well as it won’t hold a charge.
How do I know if my stator or rectifier is bad?
You won’t have any trouble diagnosing the faulty regulator rectifier if the battery is the cause. You’ll note signs right away like poor starts,
fluctuating meter readings, and dimmed headlights
. around 13 volts, the bike will start to drain the battery.
How do I test a stator?
Insert each probe into a stator socket
. You should read around 0.2 to 0.5 ohms. If you show an open circuit with the “Open” or infinity reading or have higher resistance, then the stator is bad and you must replace it. If these tests all produce positive results, then the stator itself is good.
Can a stator go bad from sitting?
Stators do not go bad from sitting unless the mag housing is full of water
.
Can a stator be fixed?
Fixing a stator usually involves
unwinding and cleaning the original stator core
, then rewinding it with a machine or carefully by hand. It starts with looking at the coil heads for damaged or burned wires, then cutting out the protective rubber coating from damaged coils.
How do you diagnose a bad outboard stator?
You can know you have a bad stator by looking at it.
If the stator is covered in salt and corrosion
. Or you see it has melted or burnt windings on it. Then you could almost bet that it is bad.
Is there supposed to be oil in the stator?
Oil should not normally be within the stator cover
. That is a potential shorting or fire hazard.
Will a quad start with a bad stator?
The stator of an ATV works to recharge your battery while your vehicle is running, similar in function to a car’s alternator. When the stator goes bad,
your ATV will only run until the battery goes dead
, which is not very long.
How many volts should my stator put out?
A stator will put out somewhere around
70 volts AC
(on average), unregulated and unrectified at high rpm.
What are signs of a bad voltage regulator?
- Dimming or Pulsing Lights. A damaged or failed voltage regulator can rapidly diminish the alternator’s ability to cycle power from the battery. …
- Dead Battery. …
- Unpredictable Engine Performance.
How do you test a Lambretta stator plate?
- Red (pick-up) to White (earth) usually around 100-120 Ohms.
- Green (low tension) to White (earth) usually around 400-500 Ohms.
How do I test my alternator stator?
The stator is the fixed ring inside the alternator. To test the stator windings, with the ohmmeter on the lowest settings,
test between each of the eyelets
. There should be very low resistance. Test between the eyelets and the stator frame and there should be no connection.
Where is my stator?
The stator is the coil of wire
housed inside the engine case
. A magnet on a shaft spins within the stator, creating alternating current (AC).
