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Hey guys i have a silvertop engine and have been noticing over the past few weeks that the rocket cover is getting covered in black film, today i was doing a oil and filter change when i noticed whats the cause it looks like a recerulation valve or something along those lines to me could be completly wrong, but it looks like it has blown a hose of, i took some pictures with my phone but its not letting me upload them, its the circle part ontop of the rocker clover closest to the firewall