Direct Injection vs. Port Injection

In this Tech Tuesday, watch as our instructors Brett McClelland and our Ford expert Tony Gonyon go head-to-head on what they know about these fuel injection systems.

0:51 This system has the best startup fueling...
2:00 This system usually causes deposits on intake valves...
2:34 This system's fuel pressure is driven off the cam...
3:22 This system is easier to increase fuel supply...
5:04 This system has better fuel economy...
5:55 This system has better emissions...
6:25 What manufacturer mixed both types of fuel systems to get the best of both worlds?

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[TheTuningSchool]

Thank you everyone for your feedback! We should've clarified in the video that we were discussing Domestic V8 vehicles. These are the high performance vehicles that we primarily focus on. So for the last question, "What manufacturer mixed both types of fuel systems to get the best of both worlds?" we technically meant out of those particular vehicles we specialize in. We understand that foreign manufacturers and other non performance vehicles might have introduced this dual setup first.

[elroyblackbean]

That was terrific. I learned a lot, and entertainment + production value were excellent. Well done, guys.

[saunders]

Toyota combined port and direct injection back in 2012, called it D4-S and used it on the toyota 86/BRZ. idk if toyota were the first but ford definitely was not.

[gearsoctane]

I was literally thinking Ford has the best of both worlds before you ask that question. Good info to know!

[pcmfrenzy]

Another good video.
Please keep them coming. Very very smart people at The Tuning School.
Buy their books and you'll see for yourself.

[themightyonek]

I'm not a Toyota guy but I think Toyota was making port and direct injection engines first

[coltmmsecurity]

I hate direct injection as it’s a PITA to keep the valves clean with a detergent fuel.

[lizarodriguez]

Thank you! This really helped me understand the differences!

[mikeflores]

The Lexus LC500 and IS 500
equipped with a 5.0-liter V8 engine that is part of the Yamaha-developed family. It's known for its performance and is designated as the
2UR-GSE engine. Carbon buildup on intake
valve not occur due to dual port injection.
Gasoline will wash over intake valve.

[anthonyparmer]

Clarified my question in the first 30 seconds

[dda]

Best Description of my Subaru Crosstrek 2.5i Direct injection system

[lizarodriguez]

I'm car shopping right now looking for an SUV. Are there any suv's that have both?

[Jpbello]

Toyota/Lexus did away with the first DI/PI setup. I have an '06 IS350 my own with a di/pi setup on it.

[LNFFTW]

As far as i know Toyota was first manufacturer to use both di and port injection.

[roostersideburns]

why arent all new engines multi port injected. makes sense right?

[essamhashem]

Wow! Great knowledge with appropriate presenting. Thank you for making it easy to understand! Deserve a Sub and 👍

[frankmontez]

So I've a 2016 Ford Focus 2 .0 L I 4 GDI engine . Is it a real concern for carbon buildup and loss of performance and what can we do to prevent this ? Any good cleaners we can add to tank ? It's not necessarily a huge concern ? It seems as if gas cleaners such as I've mentioned only treat the gas itself ? Any help will be greatly appreciated

[costantineyoussif]

What a great representation 👍🏼, do port injections cleans entirely the intake valves or just half of it ? Thanks again

[mountaindew]

I'm looking at having to clean my valves in my direct injection motor. It looks like a hell of a job. To make things worse, they put a valve that recirculates the dirty exhaust back into the intake for emissions. So not only are the valves not being cleaned by the fuel, but they're actively being showered with carbon deposits. Who thought this was a good idea? Anyone?

[Hsfgd]

What about Ford Duratec HWDA engine (this engine typically uses Siemens port fuel injection system), how long this engine lasts, what kind of symptoms or issues are there and so on? When this kind of engine (like HXDA / HWDA etc) could "wear out"?