makuloco2000
Well-Known Member
- Joined
- April 23, 2013
- Messages
- 176
- Reaction score
- 23
- Year, Model & Trim Level
- 2012 Explorer XLT
In this video I go over some new information coming down the pipe from Ford.
I've had our 2013 2.0L in several times complaining about the very sooty tail pipes, suspecting something is wrong; and poor gas mileage ...Ford and the Dealers two of them, all just laughed it off, saying there is nothing wrong.....so, nice video, but Ford really does not care , at least at this point.......I like the ride and size comfort of the vehicle, but this POS will be long gone before the warrantee is up....Plum
Carbon on the valve acts like a sponge for the fuel therefore when cold the air fuel mixture is not rich enough and a misfire occurs, same as the old port fuel injection engines just not as critical on these but possible.. They have a large valve overlap for exhaust scavenging. I guess we will see when I do the injectors tomorrow and peer down to the valves.Welcome to force induction and direct injection. This was/is a known issue with my old MazdaSpeed6 with the 2.3 DI turbo. Intake valves would build up carbon due to the egr system. Without the valve washdown from the injectors, carbon can build up on the valves.
As stated earlier, walnut shell blasting was/is a highly effective solution to cleaning the valves(short of pulling the head off and cleaning/replacing).
Typically when you add boost to an engine, you need to add extra fuel to keep the combustion chamber cooler to prevent detonation or even melting of pistons. Direct injection reduces the need to add excessive fuel and you can lean it out slightly.
My superchaged mustang has a soot "issue" as well, but I don't worry about it.
Driving softly is another cause. Wind the engine out once in a while. That will help with the carbon build up in the engine and turbo to some degree. Not a perfect solution, but it does help.
On the video about the 2:30-2:45 mark, I'm not following his explanation. How would carbon build up on the intake valves cause a cylinder to run leaner? If there is carbon build up, that cylinder would be getting less air and run richer, not the other way around.
Carbon on the valve acts like a sponge for the fuel therefore when cold the air fuel mixture is not rich enough and a misfire occurs, same as the old port fuel injection engines just not as critical on these but possible.. They have a large valve overlap for exhaust scavenging. I guess we will see when I do the injectors tomorrow and peer down to the valves.
Carbon on the valve acts like a sponge for the fuel therefore when cold the air fuel mixture is not rich enough and a misfire occurs, same as the old port fuel injection engines just not as critical on these but possible.. They have a large valve overlap for exhaust scavenging. I guess we will see when I do the injectors tomorrow and peer down to the valves.
Although I doubt there is little that can be done, and Ford won't do it anyway, I'd like to know more of what you find. Please, after you inspect and /or repair, please report back to us.....Plum