I hear rumors the 2012 3.5L F150 Ecoboost 4x4, has a problem with entrained oil in the PCV line causing carbon buildup on valve stems. Can anyone confirm this to be a concern? at 150K miles, my 2012 King Ranch idles smooth and has no problems with acceleration. The twin turbos are solid. I have heard folks add a drip pot on the PCV line to capture oil entrained in the engine vent. If this is a one off problem and a non issue I really don't want to add anything that will require monitoring. Thanks for your thoughts.
I hear rumors the 2012 3.5L F150 Ecoboost 4x4, has a problem with entrained oil in the PCV line causing carbon buildup on valve stems. Can anyone confirm this to be a concern? at 150K miles, my 2012 King Ranch idles smooth and has no problems with acceleration. The twin turbos are solid. I have heard folks add a drip pot on the PCV line to capture oil entrained in the engine vent. If this is a one off problem and a non issue I really don't want to add anything that will require monitoring. Thanks for your thoughts.
EcoBoost engines only have direct injection, so no standard fuel injection, where fuel flows over the intake valves. PCV valves cause gasoline and tiny amounts of residual oil to get into the engine to be burned, instead of being open to the air (blowby causes some of the gasoline to remain unburned, thus it recirculates back into the engine, along with oil residue). Gas needs to flow over the intake valves in order to clean them, so, yes, that leads to carbon buildup. Toyota has a new generation of GDI and ordinary fuel injected engines that takes care of this oversight.
That's the problem when they only use GDI Injectors. Thankfully Toyota is smart so they use both GDI Injection and regular port Injection to avoid the Carbon Buildup.
