Just drove my new to me 87 Fifth Ave home today. The car idles unevenly, seems like it may be vacuum leak. I’m not familiar with the function of these two units on the firewall. One seem not to have the top vacuum connection. I can see no hanging vacuum line. I did loosen the air cleaner and have a look. Does not seem like the carb has not been serviced in some time. Are the Holley’s hard to rebuild?
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