Tap tap tap...whos there?....bitch i hope not
 

Im pretty sure and confident its not major since my engine was just built but auto owners you ever experienced tapping from this special vacuum pump that you had to replace? Mines started after going fi a while ago. The tappin is what caused me to honestly wanna build my engine.https://uploads.tapatalk-cdn.com/202...fa724328f1.png


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Common failure.