Cylinder 4 misfires when car is first started.

[Mackmario8]

Hi I have a 2000 v8 ford explorer that started misfireing when it is first started. When trying to accelerate there is now a lot of shaking and loss of power. I bought the explorer a few weeks back. It had misfires in four of cylinders then. After I changed all the sparkplugs and fixed two of the cables it had no misfires. But now cylinder 4 has started acting up again.

 

[Runnin'OnEmpty]

If you determine the miss is not from the wire or plug,
then suspect the fuel injector. Make sure the injector
wiring connector is tight and clean.