Hot Engine Misfire?

[SparkPlug]

Not to sure where to start with this problem, for the last couple of weeks I have had a misfire with the engine, it only happens when the engine gets hot, say going out for a drive, then letting the car sit for 5min where the engine heat can build up, and then starting the engine again which will start a misfire, but if you let the engine cool down by opening the bonnet, then the misfire go's away and the car drives fine.




But what is making this a real pain in the ass to diagnose is there are no fault code coming back from the car, even when the emission light comes on. I have changed Leads, Spark Plugs, Lambada Sensor, and 4 new Injectors, Crank Sensor, and a new Coolant Sensor yesterday because my radiator fan stopped working, but I'm still getting a misfire from the engine when hot.




Any members here got any ideas because I'm running out of solutions?

 

[carnuts]

It being heat related I vote coil pack

 

[SparkPlug]

It being heat related I vote coil pack

I think I might have fixed it, replaced one of the spark plugs which looks discoloured and the car seem to be driving good, took it out today and I did not get a misfire at all. But if it was the coil pack, would it not produce a misfire all the time, hot or cold?

 

[carnuts]

I have had them play up when warm but fine when cold like weak spark on one cylinder not complete failure but sounds like you got it sorted