Cylinder #2 COP Keeps Failing
Hi, I've been lurking here for years, never really posted much. But, I've recently run into a problem that I'm hoping someone will recognize...
About a week ago my truck died, I found that the 30amp fuse under the dash was popped and that the coil on the #2 cylinder had failed. I replaced the fuse and COP and was able to get home (about 200 miles).
When I got home I went ahead and replaced all COP's and Plugs. I took truck for a quick test drive only to have the 30 amp fuse and COP on #2 cylinder fail again (overheated and boiled fluid in COP)
At this point, I suspected a grounded coil plug, but I can't seem to find one.
Since then, I've swapped plugs, COPs, hooked up an O-Scope... And everything is fine until I take the truck for a test drive. I put truck in gear and pull away, and it will start to stumble, ending up in a blown 30amp fuse and failed Cyl. #2 COP.
Besides a shorted COP ground wire, what else could cause this?