1979 Corolla 1200
Connect a vacuum gauge to distributor sub-diaphragm hose. With a cold engine, vacuum should rise and fall as throttle is opened and closed. With engine warm, vacuum should drop to zero.
Connect a vacuum gauge to distributor sub-diaphragm hose. With a cold engine, vacuum should rise and fall as throttle is opened and closed. With engine warm, vacuum should drop to zero.