Do catch cans work ?

[NotSerious]

A mechanic tests his wife's GDI car to see if catch cans work.


Answer : If you get a good quality catch can and install it properly, yes, it probably works.
They do catch a lot of junk that would otherwise go through the intake and gum up the valves.
The oil separating systems that come with the car may not be enough to get rid of much of the goo.

The only way to tell for sure though is to test two similar vehicles over a long period of time (One with a catch can and one without) and check the back of the intake valves. He does not do that here.

He does have another video on the issue of "cold-start misfiring".

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[dallasjhawk]

Ill just leave this here since its relevant to 10th gen civics and accords

 

[nikkon]

I just made my second oil change. The car has now 13k km. The oil catch can has only 6k and when I open it it had like 3 g of oil there. Quite nothing.

 

[xcoreflyup]

I have the mishimoto catch can installed on my 2017 HB sport. I dont have the condensation at all, just a 3/4 teaspoon of dark brown engine oil every 5k miles.

 

[latole]

Reading nikkon and xcoreflyup answers, IMO you don't need a catch can and pay $200 + work.

 

[andromeda]

That relatively minute amount of material passing through the engine, is harmless and of no consequence. If used as intended, CCs add an unnecessary maintenance item. Thanks, but no thanks !

 

[latole]

That relatively minute amount of material passing through the engine, is harmless and of no consequence. If used as intended, CCs add an unnecessary maintenance item. Thanks, but no thanks !

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