2005 f150 5.4 173k miles. Always synthetic oil, Bosch filter at 5k . The issue, on cold start. First start of the day after sitting over night. Truck starts up, runs smooth for 2 minutes . At 2 minutes starts to run rough. Engine
shakes and misses. No code. Left to idle, once engine reaches 168 degrees, back to smooth running. The rest of the day,engine starts and idles like new. Only occurs on Cold Start. Mileage
is very good. Engine is smooth. I have replaced the following in attempt to correct; VCT solenoids, plugs sps515, COPs, fuel injectors
, TPS,cleaned throttle body, cleaned MAF, cam position sensors, fuel filter.
I am going to change phazers, chains, tentioners, oil pump
, next. Driving me crazy