Why did the back tire of my bike lock up?

Sounds like you may have a bad set of bearings. You will need to: remove the rear wheel from the bike by loosening the axel nuts and the coaster brake. then remove the axel from the wheel, there should be a retainer clip that can be removes from a groove in the axel, once removed, the axel should slide out.

Why does my wheel not turn when I pedal?

There’s a chain that connects the large cog between the pedals to the smaller sprocket at the centre of the back wheel. If the chain has come off either of those, the pedals will turn but the back wheel may not. If the chain is stuck, then the pedals may not even turn.

Why is my back wheel on my bike not moving?

Check the rear derailleur – is the chain running freely though it. If not, check the chain line and make sure the small sprockets are free spinning. Check the chain line though the front end. Is the chain clear of the derailleur and sitting properly on the chain ring.

How do you fix ghost pedals?

The end result will be sporadic ghost pedaling when the bicycle is coasting. To fix this issue, you will have to replace the broken pawls, the freehub body, or the entire hub.

How tight should rear bike wheels be?

You want your rear axle very tight. 150 in/lb is about standard. If it is not tight it will allow the rear wheel to move around and it ties your rear triangle together. Basically the whole back of the bike will feel sloppy.