the pipe between valve and intake manifold is stainless steel, but trivial to clean, say with brake cleaner. #6 Mendel Leisk, Aug 13, 2022 Tombukt2 Senior Member Joined: Nov 29, 2020 11,170 1,950 0 Location: Durham NC Vehicle: 2009 Prius Model: Base It's an intercooler...
I used a similar method as Mendel's oxi clean method, but I used extra strength drain cleaner soaks at full strength instead. Sodium hydroxide turns oil into soapy material that you get out with hot water rinses. Would've been much faster if I had access to a pressure washer, but the ...
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For the EGR valve I used brake cleaner (a little more benign than "carb" cleaner) with rags and brushes, worked fine. Do be careful with the electronics, just deal with the carbon; don't spray indiscriminately. Since I'm pulling the motor, I'll be going all the way back to the cat...