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1. Check whether the surface of the camshaft is
worn or
damaged
And whether the camshaft bearing rotates flexibly, such
as serious wear
Or the bearing rotates with the phenomenon of hairpin,
then the cam should be replaced with a new one.
shaft parts;
Inspection of the cylinder head
1. Check whether the sealing of the cylinder
head is good. If the sealing of the cylinder head
is poor, a new cylinder head or valve should be
replaced;
2. Check whether the cylinder head is
deformed, and check the flatness of the cylinder
head with a knife edge ruler and a feeler gauge.
燃烧室检漏测试：充气 0.3Mpa，泄漏量≤
6000pa/10 秒。
检测参数：充气时间 5S、平衡时间 3S、检
测 时 间 2S 、 放 气 时 间 0.5S 、 检 压 上 限
320Kpa、检压下限 290Kpa、判定值 1.2Kpa。
Check
cylinder
head flatness
