explorer 2008 from saudia arabia

[fahad2008]

good day to kindly people i have explorer 2008 xlt odmeter118000km
i have check engine light on code p0304 means misfire cylinder 4 i change spark plug and coil and injactor and wire still misfire this problem happen before six months untill now some times no misfire when the car is hot please could you answer my qusetion.....regard fahad...

 

[fahad2008]

please anyone answer

 

[sidney12345]

The PCM switches the ground for the injector. Use a bulb in the connector it should flash. Coil the same thing. Also a compression test might be worth while .

There should be battery voltage all times on one pin with key ahead.