Love all, Trust a Few...
Truck is a 2005 has almost 200k miles heads are studded, egr is deleted. When i fire up the truck it misses quite a bit and surges when you drive it. It still persists after it warms up, sometimes it breaks up, sometimes it runs like a top. Hooked scanner up to it, FICM never dropped below 47.5 volts. High Pressure oil stayed where desired. All filters have been serviced. Has anyone ever had the upper fuel oring go bad? Im thinking its that. Any input would be helpful.