Yeah about 20 cans of brake cleaner and about 3 rolls of shop rags. It took me 4 days to totally clean my whole intake manifold. I would clean it as best as I could one day, then spray about a whole can of brake cleaner in the intake manifold and let it sit overnight, then go to work on it again the next day. Or you could bring it to a machine shop and have them clean it.
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