Hi fellow techs. This Buick is giving me a nightmare. It misfires no.4 cyl. on acceleration,and sometimes even at idle. I checked all plugs,moved them to different cylinders, cleaned injectors ultrasonically,replaced spark plug wires,installed new coils an...

FIX posted 11/7/1999

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle