No compression

[westmark]

Replaced top end on 2004 summit 800, had good compression for about 10 minutes. Went to start it again and it had lost all compression. Any ideas?

 

[winter brew]

Broke a ring?

 

[RGM]

If there no compression both sides I would guess head gasket. You can buy a compression tester that works off of shop air and listen to where it going out.

 

[WHISTLER HELISLEDDER]

If there no compression both sides I would guess head gasket. You can buy a compression tester that works off of shop air and listen to where it going out.

Ray that one is easy!!!! Squirrels stole the plugs.