- Jul 25, 2020
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Dodge doesn't use direct injection on its gasoline engines. The catch can is still useful to prevent that stuff from getting sucked into the cylinder which burns and xontributes to deposits on the piston. Which leads to hot spots and detonation issues.On the older engines, The injectors were in front of the valves. So the engine oil vapor would be washed with fuel before passing over the valves. With direct injection engines. There is no fuel washing the intake valves. Only the oil, which builds up, requiring valve cleanings, if you don’t perform valve cleanings you decrease performance. The catch can catches most of the oil vapor coming from your crank reducing the amount of build up on your valve.
If YouTube t”direct injection catch can” there is a lot of info out there. This isn’t a new issue.
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