Please help! My 2005 focus ZX4 started jumping while at low RPM...about a week later the Engine light came on.. Said cylinder 2 misfire..turned off engine light through diagnostics...Changed all spark plugs...it was fine no jumping....two days later jumping again...engine light came back on...still said cylinder 2 misfire... Switched number 1 and number 2 fuel injectors around..turned off engine light again..a week later same thing...engine light came on again..now there’s white smoke with no smell and water coming out of exhaust pipe..still says cylinder 2 misfire and still jumping at low RPM..what’s going on???? I do not know a lot about cars. I can’t even find the MAF sensor.

 

Have you tried a coil pack.