Carbon buildup on these trucks is very exaggerated. Yes there is some but nothing compared to other DI platforms. In fact it’s less of a concern compared to VW, AUDI, Etc. If I were you I would just listen to Ford. They are the ones who created this platform. My workshop manual states nothing about any carbon buildup problems as the VVT plays a big role.

The problem that arises with an induction service is the fact you have the chance to cook your turbos. Not only from the chunks of carbon but from overheating them. The “cleaner” must be used in small bursts.

By all means you can use the cleaner but don’t expect outstanding results. If anything your wallet is a bit lighter.

 

Are you asking for feedback because you want to do it? I pulled the intake manifold, rotated the engine so both valves were closed, then soaked the valve with the CRC stuff. It actually held the liquid pretty well and does a great job dissolving carbon. I then took a nylon gun cleaning brush and scrubbed the valve. Next I used a brake bleeder pump to suck the liquid out. I did this about 2-3 times for each cylinder. Rinse with carb cleaner and you're done. Rotate the engine and do the next cylinder. Changed the oil just to make sure nothing leaked inside. Took me about 3-4 hours total.

Overall I think I got about 90% of the deposits. Since there is no fuel atomization like a NA motor, I'm not sure that minor buildup really affects performance much. I noticed slight improvement, but definitely not worth the effort IMO.

 

Sounds like a good idea. Wonder what the Ford techs might think about this? Might have to do this if I get bored...at least pull the intake to have a look. Thanks.

 

I started using the crc stuff very early on, like 10k miles, and was doing it every oil change or two and then kinda forgot for a while. I also had a catch can from ~10k. This was my valves at 91k

 

Received a lot of likes for my last post, so I figured I'd pay it back and dig up the thread where I somewhat documented what I did for the "spray and suck" method. Again, it isn't easy getting on top the motor and working a brush in there, but it's doable. If you've never seen yours, it might be worth a look.

It can be found in post #929 in this humongous thread Ford F150 3.5L Ecoboost Rattle Upon Start Up- Timing...