2001 Ford F-150 with 4.2 liter engine with 194500 miles...Service engine soon light is flashing

Question

Misfire on cylinder 3 and excess emissions level on cylinder 4 and combustion too lean bank 2

Answer 1

When the CK ENG LT flashes this is a misfire condition or a catalytic damaging condition so the CK ENG LT will flash, If there is a misfire on cylinder 3 and 4, this more than likely will be the ignition coil. what happens on the ignition coil 3 and 4 are paired ignition.

Here ignition 3 and 4 are paired. This is the firing order that is for the engine