Vacuum leaks will cause engine to rev high. You need to check the vacuum lines for cracks, splits, dry rot or mouse chewings. Pay careful attention to under hood vacuum diagram sticker. It will help make sure the lines are installed in proper location and give you an idea where it all goes. There are 3 wires going from wiring harness to rear of carb. 1 of those wires controls the idle circuit, just make sure they are connected and that mouse didn't chew in 1/2. Also pull the connector apart and make sure terminals inside are not corroded. If they are clean them. Keep us informed about what you find out. Mike.
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