用手掌大的平木头包起320号沙纸，从左到右，从上到下，来回磨，最后用上1000号沙纸细磨
this is why it stil overheating, the head is wraped, sand it thi
need cylinder head resurfacing
But it dose not have any check engine on . No misfire . And ru
motorcycle
2019-01-12 08:50:08用手掌大的平木头包起320号沙纸，从左到右，从上到下，来回磨，最后用上1000号沙纸细磨