Okay so I have a 98 Honda civic 1.6 4 cylinder. Everytime I drive more than 15 minutes I can see smoke coming from right side of hood where my overflow tank is (reservoir) so I open it up and most of the smoke comes from black tube on the cap connected to the overflows tank. I HAVE already replaced radiator cap, radiator hoses (top and bottom) thermostat, fuel filter. Idk what else I could try? What else could I buy to fix the problem? Buy a new radiator? Any suggestions help
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