Each nozzle has it's own check valve, that's why only that one side does it. look under the hood about 6 inches away from the nozzle itself, it's a little round white piece of plastic.
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Originally Posted by Automobile Magazine
The 300ZX Turbo is a dance; it's a song; it's rolling, roaring automotive art. There is no color that doesn't suit it. There is no mood-lifting chemical substance it can't replace.