Uploaded April 2020 | Updated September 2026, 3 weeks ago

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Mitsubishi GDI engines (as most other Gasoline DI engines) suffer from coked + gunked up intake systems, some more, some less, but it always happens. Sooner or later, the engine will loose power and fuel consumption is getting worse .
The only solution is cleaning the entire intake and EGR system, this is usually done with some sort of sand blaster, but using walnut shells as a blasting media, because any remains will go into the cylinders and sand is the last thing you want there.
A we don't have the equipment, we came up with another solution, takes a bit more time, but the result is good.
Part 1 shows dismantling the entire thing, part 2 will be cleaning and re-assembling.
The Mitsubishi 4G94 2.0 GDI Engine is used in many Mitsubishi cars, the 1.8 version was also used in Volvo S40 Models.
This one is a 2002 Mitsubishi Shogun Pinin Mirage with an Aisin AW4 automatic transmission. In some countries this was sold as a Mitsubishi "iO" alo as "Montery"

Part 2 is here:
youtu.be/lE3FafoBBS8

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