I rechecked my grounds and everything is bolted down I don't see any other ground . I fixed one cylinder cause the connector was bent and want making contact but still the cylinder furthest back on pass side and middle on driver side is bad I haven't check the furthest back on driver side cause the balence tube but I will. I am gonna try and get my hands on a known good ptu. A bad ptu will give spark to some cylinders and not others?