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i've got an 81 f150 with a 302, c6. It has a high rise intake, cam, headers, and a holley 650 carb.
when i have the pcv disconnected and the port on the carb plugged it will idle fine, but when i hook the pcv up, it will idle fine for a min, then it will jump 200-500 rpm, and eventually it will calm back down, i dont know why its doing that, i've looked for vaccume leaks elsewhere but i cant find any....
would the leak be comming from inside the carb...?