Mud in my Veins
Join Date: Oct 1999
Location: woooooo pig sooooooie!
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found a vac leak, what is this thing?
i thought my engine vac was 6" but apparently that was just because the A/C controls line i tapped into has a problem. it's the one that has a T.. one line goes to the T from the manifold, then one goes out to the A/C controls, but then there's another one that goes to a little box on the side of the evap (?) housing. i believe it's the controller for the floor/vent-defroster but i'm not sure... what is that thing? it wont hold vacuum at all so i just plugged its line til i replace it, but i cant even really see how to do that. engine vac is 21" at idle and 25 at 3k, so that looks good, but this was at idle so i dont know if the EGR or thermactor solenoids were kicked in yet... i KNOW their lines are all FUBAR. i was thinking about vac leaks and what-not.... does a vac leak cause the engine to run lean? it seems like it would sorta bypass the butterflies and give it more air than it needs, but is that really the case? those lines arent very big though so it doesnt seem like it would be too noticable. my friend just got a 93 f150 and you can hear his vacuum bleed off when he turns the engine off... i want mine to do that again like it used to [img]images/icons/wink.gif[/img]