问:整个bank1大放异彩,和较低的压缩。1997年宝马540

我有一个97年宝马E39 M62 non-vanos。我最近完成了更换正时链条导轨。完成后,我有闪烁的玻璃纸。P0300、P0301 P0302、P0303 P0304(随机无能)气缸1,2,3,4。我更换喷油嘴(新),火花塞(新)和交换线圈是否失败。他们没有。我那时冒烟测试发现泄漏闭路/ PCV和垫片之间油门身体和摄入量。取代闭路/ PCV和节气门体垫片。再冒烟测试,没有更多的泄漏。失败仍然存在。 (No oil or coolant leaks, no engine knocks, no smoke. 248,000 miles on clock. Idle is around 500 rpm's steady. Car drives okay) I also did dry compression test. Considered wet test. The following are my dry readings. Bank1 Bank2 4-155 8-180 3-165 7-185 2-155 6-195 1-167 5-185 I did a back pressure test to check for clogged cats, 2pre cat O2 sensor hole, 0 psi for both.

有可能是银行1凸轮是错误的时间?我可以忽略什么?

我的车有248000英里。
我的车有一个手动变速箱。