yeah. Pull the pump off and check the diaphram. Also put a vacuum gauge on the vacuum source for the pump. Pull the engine over and see if the needle moves back and forth. That’s tell you if any seals are blown casuing a poor case signal.
yeah. Pull the pump off and check the diaphram. Also put a vacuum gauge on the vacuum source for the pump. Pull the engine over and see if the needle moves back and forth. That’s tell you if any seals are blown casuing a poor case signal.