1989 Chevrolet Corvette "butterfly valve adjustment function" Questions

...butterfly valve on throttle body. could be buildup of carbon that when cold is hard, and after engine warms up the buildup would soften. this would allow butterfly to sink into it. always start with ...

...valve of the brakes. Now you need to make sure that all hoses from the intake manifold, is seated properly. Here we don't want any loss of air-suction. Here's how this works, air gets sucked ...