Idle issues

[75ranger]

Hey all-

Recently had my Edelbrock rebuilt, float adjusted, yada. Changed plugs at the same time. Recently, when idling, I will get a noticeable RPM drop every 10-15 seconds or so. Doesn't feel like a miss. Where do I start?

Thanks in advance.

 

[B RON CO]

Hi, after making sure the cap, rotor and wires are in good condition, I would put a vacuum gauge on it. Good luck