火箭三R中气缸压缩为零。有人知道原因吗?

I just installed the fuel tank and tried to start it for the first time. It went smoothly. However, a new problem seems to have appeared. The throttle seems to be difficult to control. It returns very slowly when I turn it gently. The fault code p0068 still appears after I delete it. It's a headache.
 
Use the adjusting on the cables to shorten the throttle cables till you have free play in both cables.
This might be the problem with tight cables.
 
Hope this helps
check vacuum hoses this may cause it to fall (slow down) on its face b4 accelerating
electric connectors