买个专用的Pliers $10. 挟稳后,左右摇晃同时往上拔即可。先查火花塞，然后考虑换cable.

http://www.walmart.com/ip/OEM-Spark-Plug-Pliers/20742714?action=product_interest&action_type=image&placement_id=irs_top&strategy=PWVAV&visitor_id=38726902907&category=0%3A1072864%3A1031899%3A1067609%3A1119438&client_guid=b978aab0-6d15-4e0a-a153-bb8155541d10&config_id=2&parent_item_id=15781957&guid=dff206e9-7d5f-4ece-9e3b-e1fc12b9eae1&bucket_id=ir*****ucketdefault&findingMethod=p13n