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Message: <blockquote data-quote="Venompower" data-source="post: 1483758" data-attributes="member: 21079">I recently discovered a vacuum leak at the throttle body.  There is a hole on the top of the throttle body that was apparently capped from Ford, well my cap is missing.  I've tried to google it and can't find anything about it... what was it for, and why is it even there is they just capped it off? The upper half of the hole is smooth and 1/2" then about half way down it decreases in size and has threads.  I took the Throttle Body to Menards last night and it's not as far as I can tell a normal pitch for either SAE/Metric.  Does anybody have any information about this?<img src="https://i.postimg.cc/bJqdrWdH/tb-hole.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /> I also found upon removal that the previous owner reinstalled the throttle body after having the intake powder coated with no gasket... so that will be ordered as well.</blockquote>