In every trouble thread I try to identify the cause, cure, and any preemptive preventive measures. This one's tough because certainly those connectors are designed to never vibrate loose. So,
- Defective connector(s)? If so, that valve cover will be coming off in the future for another quick fix.
- Connectors not fully engaged last time? If no final check before buttoning up, then avoidable human error. Hate that!
- Connectors fully engaged but accidentally separated part way during reassembly, or by some other means, then what was it??
