Engine Trouble 80cc Pexmor 2-Stroke Engine Won't Start

[Aikaru]

I just finished building my first motorized bicycle...I checked all wires, they are connected properly, clutch is good, and I tested for spark, compression, and fuel and I'm getting all three. I've probably tried to start it like 50 times by now and it does not start, it does slow down the bike considerably due to the compression, but there is no ignition, and I am absolutely lost as to why it won't start. Pictures attached

 

[Aikaru]

well it seems the coaster brakes that came with the bike are failing or have failed

 

[Aikaru]

it's not the clutch, it was fully disengaged when i tried to move it and i was able to drive it fine until this happen

 

[Wrench]

well it seems the coaster brakes that came with the bike are failing or have failed

I guess ya gotta take the rear wheel off and have a look at the hub guts

 

[Aikaru]

Yeah probably

 

[Karl Snarl]

Have you investigated why the rear wheel is locked up, or do ya want us to guess why?

Prob a loose chain jammed in the drive sprocket housing. My guess. Lol

 

[Aikaru]

Prob a loose chain jammed in the drive sprocket housing. My guess. Lol

yep, that was indeed the issue. tightened it up, havent had it lock up or derail once in two days so that's good

 

[Karl Snarl]

yep, that was indeed the issue. tightened it up, havent had it lock up or derail once in two days so that's good

Chain is too loose if it is jamming. if you need it loose because it goes loose tight, your sprocket is not aligned properly or your axle is bent.