Engine stuck

[Frankmowthelawn]

No idea why or how it got that way. Bike hasn't run in ?????????? and the engine is stuck. What is the safest/best way to break it loose? It's a 1976 CB 500 two cylinder.

Thanx!

FMTL

 

[Sonreir]

Are you sure it's a seized piston or might is be something else that's stuck?

 

[djelliott]

If you're sure it's stuck, pull the plugs and spray some blaster down the cylinders. After that it's just soak and wait.

 

[Qckslvr]

just to add to the poster above, I have used diesel. It is cheaper than PB blaster.

Had to dump some diesel down each cylinder of an old frozen up Ford 300 6. After about a day of soaking it fired right up

 

[4eyes]

After soaking, gently rocking it forward and back while in gear, will eventually break it free.

 

[lingo]

ATF works wonders too. It is full of detergents.