Piston keeps getting stuck help please

[pjoseph]

I recently picked up the 18tz nitro engine. I have maybe a 1/2 gallon through it no problems at all until now.

The last two days when i start it up and lower the throttle to get the wheels to stop turning it will shut off and i can't budge the flywheel because its stuck. I put in new clutch spring today just incase and same thing first start it shut off and stuck again.
I have always used an engine heater to get it hot before starting.
I understand its new and tight but i find it strange i have not had this problem before and as mentioned before i have run at least a 1/2 gallon up until now

Any ideas? Thanks

 

[Rolex]

When you lower the idle to make the wheels stop moving, do they stop?
If not, you have a problem with the clutch. Maybe a broken or week spring or even a piece of a clutch shoe jammed in there.
If that's the case, trying to turn the flywheel means you are also trying to turn the entire drive train, clear out to the wheels.
Start by removing the CB and let us know what you fine.

 

[SchrodeMode]

He's already solved this issue, repairs were covered under warranty.

 

[Rolex]

So, what was the problem?

 

[SchrodeMode]

So, what was the problem?

Rust. Look in his other thread for pics, I think it's "I'm sure this isn't good" .