Subaru – seem to have broken a tooth in starter pinion or ring gear

How do I know if my starter ring gear is bad?

When the starter drive gear is worn out or not engaging properly, it will often produce a grinding noise. This is similar to the one that is heard if you start your engine and then accidentally action the ignition switch again. If the grinding symptom is ignored, it may also result in damage to the engine flywheel.

What happens if the starter is too close to the flywheel?

Typically, a new starter will make noise when it’s positioned too close to the ring gear on the flexplate or flywheel. Installing thin, steel shims between the block and starter is the method to eliminate the noise. Another problem that may cause starter noise is an out-of-round flexplate.

What do the teeth of the ring gear engage with?

Ring gear teeth engage with the starter motor allowing the engine to crank over and start. After years of engagement with the starter results in worn or broken ring gear teeth.

What is a pinion gear on a starter?
Putting a good starter on a damaged ring gear will most likely damage the starter pinion. Also verified the ring gear tooth count for the engine being serviced. After verifying the engine ring gear

How do I know if my flywheel ring gear is bad?
More every time i've seen that the flywheel ends up being out of round the ring gear or something is on there crooked. So look at the distance.

Can you misalign a starter?

If the starter engages and cranks the engine, then skips and spins freely, there are two likely causes: Misalignment of the replacement starter. The overrun clutch on the replacement starter may be malfunctioning. The clutch may have been damaged during shipping or installation.

Can a flywheel damage a starter?

Since the starter motor pinion material is softer than the flywheel, it is highly unlikely that the starter would ever damage the flywheel teeth.

Is it my starter or flywheel?

If you turn on the ignition switch and hear a whining sound and the engine is not cranking, then it’s possible that the starter gear is not engaging the flywheel. If this is occurring, then your starter may have to be replaced.

How do you check a flywheel on your teeth?

Take the starter off and you will see a few of the flywheel teeth. You can paint one so you will recongnize it again. Next, take a screw driver with a long handle (for leverage) and rotate the flywheel gently and inspect the teeth. Don’t crank it fast enough to start the engine.

What is the small gear on a starter called?


The teeth of the ring gear are driven by the smaller gear (known as the pinion) of the starter motor. The pinion engages the starter ring only during starting and once the engine is running the pinion withdraws.

Why won’t my starter motor engage?

This fault is caused by either low battery power or loosen connections in the battery terminals or the terminals at the starter solenoid. Low battery power may be the leading cause of the issue. Jumpstarting the battery will ensure that the starter motor receives sufficient power to engage the flywheel.

What is the gear on a starter called?

The starter is a small electric motor with an armature ending in a gear. The engine’s flywheel has a ring gear that the starter gear, called the drive gear, engages with. When the starter motor runs, it spins the drive gear, which spins the ring gear and the flywheel.

How do you fix a flywheel ring gear?
On that ring gear let's just burn it. Off. Now remove the heat and again make sure that it is supported underneath just takes is a little hammer. And you should just be able to drive that ring gear.

What noise does a faulty starter motor make?

A bad starter’s tell-tale noise is loud clicking. It can either have a fast tempo, click-click-click-click-click-click-click-click or a slower lilt of click, click, click, click. No other part makes these noises when they fail, so if you hear either, you’re likely going to be on the hook for a brand-new starter.

How do you test a starter Bendix?

The other end will need to be attached to the starter case. Step Three: Attach the positive (RED) battery cable to the positive terminal on the battery.

You will get one of four results from your bench test.

  1. The starter bendix will come out and spin fast. …
  2. The starter bendix will come out and spin very slowly.

Can you test a starter without removing it?

The easiest way to check the starter on the vehicle is to use jumper cables to bypass the vehicle’s electrical system. With the ignition turned off and the transmission in “park” — and with all due care — connect one end of the red/positive jumper cable to the positive terminal of the battery.

Why does my starter engage but not spin?

What could cause my starter to not engage with the flywheel? The most common reason a starter is not engaging is low battery voltage or a faulty starter motor solenoid. It can also be caused by faulty internal parts of the starter motor like the plunger or pinion gear.