Engine Trouble Engine won't start + chirping noise when I open the throttle

[sapientpearw00d]

When I try to start my bike, the engine seems to turn over and start but won't respond to throttle and dies out once I stop pedaling. When I open the throttle, a chirping noise starts and gets louder as the throttle opens. It sounds like it chirps in time with the engine.

 

[Cisco]

Head gasket is leaking. Be sure you have your washers stacked right. The short cap nuts only have 8 threads (M8 1.25 has 10mm depth). Torque is 144 in/lbs. When you take the head off, check the surface for nicks or roughness.

 

[sapientpearw00d]

What's the fix? Tighten the head, replace the gasket? My washers are stacked with the lock washers between the nuts and the larger washers. This only started after I took the bike on a ride, perhaps that means the head wasn't torqued properly and it vibrated loose?

Head gasket is leaking. Be sure you have your washers stacked right. The short cap nuts only have 8 threads (M8 1.25 has 10mm depth). Torque is 144 in/lbs. When you take the head off, check the surface for nicks or roughness.

 

[Chainlube]

What's the fix? Tighten the head, replace the gasket? My washers are stacked with the lock washers between the nuts and the larger washers. This only started after I took the bike on a ride, perhaps that means the head wasn't torqued properly and it vibrated loose?

It was torqued down but a heat cycle loosen it up. Tighten it again.

 

[Cisco]

It takes a while for the head and cylinder to settle in. Check the torque before and after each ride for a while till you get it broken in. I chased the torque around on my CNC head several heat cycles before it finally settled in.

 

[sapientpearw00d]

That fixed it! Thanks a bunch.