has anyone heard of this?

[gerryh]

I have seen rumors, hints, that the 2015 has fixes for both the CAC condensation problem and the DFI intake valve carbon build-up problem.

The 2015, like the Lexus GS has done for years, uses SFI for low HP cruise, which of course also serves to "wash" the back side of the intake valves.

DFI is reserved for boost mode.

The CAC now has a vane/shutter system that automatically closes and blocks cooling airflow through the CAC during "off-boost" driving.

The question becomes, will prior purchase Ecoboost owners be offered a retrofit kit??

One could see that retrofitting the vane/shutter system to older F150 Ecoboost trucks might be entire possible, POC!

SFI....?? NOT!

But, wouldn't a simple single throttle injector also solve the problem, PLUS keep the entire throttle body clear of EGR deposits?

Ford... Listening!

 

[rubydist]

no, a single tb injector would not keep the tb or the valves clean. the sfi keeps the intake valve clean by only spraying fuel on the valve when air is moving into that combustion chamber. a single tb injector would put fuel on the back of the intake valves continuously, which would make more buildup, not less. additionally, it would decrease fuel economy and increase emissions.

 

[gerryh]

What about the first half of this article, is it true that they fixed the CAC and the carbon build up on the intake valves on 2015 ecoboosts?

 

[BamSHO]

According to the FORD Racing rep we talked too at Carlisle. FORD has no approved way to clean valves. The 2nd Gen 3.5 in the GT and Raptor had port injection to clean the valves. Nothing in the works to us with the first Gen 3.5.