1992 F-150 4x4 Black Smoke
I have a problem with a 1992 Ford F-150 4x4 with a 5.0 V8 EFI 125k miles.
Some days it will start and run fine, then the next day it will be difficult to start. When it does start it will blow black smoke while misfiring and popping. Letting it sit for a while sometimes cures the problem.
This is an intermitent problem and difficult for me to come up with new ideas to check. Any help or ideas would be appreciated.