Yamaha Raptor 660 R Top End issues

2005 yamaha raptor 660 r 5 valve
Top end issues

[@jimrooney1867]

wow someone beat that poor motor hard , i have a raptor with popping issues i hope it's not like this inside . that auto decompression makes me nervous because i have a harmonic vibration coming from the cam area so i am worried lol good luck & best wishes

[@elchavezforthepeople3633]

2004 2005 ??

[@GunsNReloads]

Good video! How did you keep the motor from trying to turn over when blowing in the air on the leak down test?

[@revemupchannel4178]

Thanks!
I don’t believe it was an issue on this engine.

[@kevinhumphrey932]

I'd be willing to say the decompression valve is holding the valve open

[@JayJay-tz3dg]

Where did you get the Manuel from?

[@revemupchannel4178]

I can’t remember exactly. Probably from the internet. I probably have it saved somewhere but it’s been a while since I’ve needed it.