Direct Injection Problems and Solutions | Savagegeese

[Dr.Kamiya]

https://www.youtube.com/watch?v=xrLNDgrIw3U

[JohnM]

What local vehicles have gas direct injection (GDI)?

- all SkyActiv-G
- FA20 (except for BRZ/86)
- Hyundai?

[hardwang]

What local vehicles have gas direct injection (GDI)?

- all SkyActiv-G
- FA20 (except for BRZ/86)
- Hyundai?

Our Hyundai Kona is port injected. Not sure about the others.

All the small turbo engines these days are direct injection.

[JohnM]

Important Advice for Anybody With a GDI Engine | The Drive

[Stigg ma]

Important Advice for Anybody With a GDI Engine | The Drive

kamusta kaya mga chinese cars na GDI tulad ng geely

[jojopad]

Here's how to clean those intake valves and all those carbon buildup in a Mazda Skyactiv engine.

From the video you can see that the intake valve is already fully covered with gunk

https://youtu.be/mhG1ZBqMnKA

[jojopad]

Installing an oil catch pan does help reduce the possibility of oil going through the intake valves.

https://youtu.be/wwshYqm4cH8

https://youtu.be/ICUiqXrPsh0

[jojopad]

If oil catch pan can help reduce the oil going through the intake valve, how come car manufacturers are not using it by default?

[jojopad]

kamusta kaya mga chinese cars na GDI tulad ng geely

Especially those with turbochargers. I reckon at 10,000km the intake valves are already covered with carbon deposits.

[yapoy86]

If oil catch pan can help reduce the oil going through the intake valve, how come car manufacturers are not using it by default?

I think mazda installed a catch can in the skyactiv engine..

[JohnM]

If oil catch pan can help reduce the oil going through the intake valve, how come car manufacturers are not using it by default?

They don't want to add another maintenance item that may need attention earlier than the valves themselves. An issue with the catch can will raise a check engine light because it is related to the emissions control system.

[yapoy86]

They don't want to add another maintenance item that may need attention earlier than the valves themselves. An issue with the catch can will raise a check engine light because it is related to the emissions control system.

There are OCC design that drains the oil back to the system.. diesel engines also suffer from carbon build up but can withstand..

For my mazda skyactiv, i use petron blaze fuel... i noticed that almost zero soot formation at the tail pipe.. not like before when i was using xtra or xcs unleaded.. less soot means lesa carbon build up at the intake valves

[travajante]

I think mazda installed a catch can in the skyactiv engine..

It has an oil separator integral w/ the Positive Crankcase Vent system.
Here's the removal procedure:
POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.]

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[bxr monkey]

There are OCC design that drains the oil back to the system.. diesel engines also suffer from carbon build up but can withstand..

For my mazda skyactiv, i use petron blaze fuel... i noticed that almost zero soot formation at the tail pipe.. not like before when i was using xtra or xcs unleaded.. less soot means lesa carbon build up at the intake valves

Blaze Euro6, less pollutants. Kaya okay din na investment sa daily driver, kahit hindi required ang 100 Octane. Salamat sa reminder, nag i isip isip kung mag downgrade ulit sa Xtra/XCS.

[travajante]

Blaze Euro6, less pollutants. Kaya okay din na investment sa daily driver, kahit hindi required ang 100 Octane. Salamat sa reminder, nag i isip isip kung mag downgrade ulit sa Xtra/XCS.

It's not just the fuel. You'll have to wisely choose your synthetic oil & keep the change interval short.

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[jojopad]

https://youtu.be/uVd-ZS5bnyY

[jojopad]

Looks like these downsized gas engines with turbochargers are going to be maintenance nightmares for those who intent to keep these long term.

[bxr monkey]

It's not just the fuel. You'll have to wisely choose your synthetic oil & keep the change interval short.

Ah okay, kasi ang mineral oil or semi synthetic mas prone sa carbon deposits at less protection sa carbon kung sa GDI?

[jojopad]

Ah okay, kasi ang mineral oil or semi synthetic mas prone sa carbon deposits at less protection sa carbon kung sa GDI?

Use the engine oil spec required for your car's engine. Eto kasi ang fully tested ng manufacturer sa car engine nila.

For example sa Mazda Skyactiv direct inject gas fuel engine, required talaga na ACEA A3/A5 Euro blend or API SN / ACEA C3. Using other oil spec may lead to some side effects, e.g. oil gunk deposit build up due to incorrect viscosity.

[bxr monkey]

Use the engine oil spec required for your car's engine. Eto kasi ang fully tested ng manufacturer sa car engine nila.

For example sa Mazda Skyactiv direct inject gas fuel engine, required talaga na ACEA A3/A5 Euro blend or API SN / ACEA C3. Using other oil spec may lead to some side effects, e.g. oil gunk deposit build up due to incorrect viscosity.

Ah okay. May mineral naman na pasok sa API SN / ACEA A3. Hindi nga lang pasok sa required viscosity.