Hey everyone, I read on this forum a lot but finally made a profile so I could try and figure out this issue. I have a 318 from a 1990 W150 and I put a holley sniper 2 on it with an old streetmaster intake. When I start it up it wants to idle around 1500 or so and I can only lower it around 1000 until the idle screw can't be turned out anymore. The goal was to get it to 750 at idle. I've unplugged and capped all vacuum lines to rule out that, sprayed cleaner around and did a smoke test which it passed. Holley had me send the unit back to them to test it, but on the phone they said they've never heard of a sniper 2 having this happen and thought it might be an internal vacuum leak. I've read that you can test this, so I hooked up a vacuum gauge to the dipstick and plugged the crankcase pressure so it only reads out of the dipstick. It read that there was pressure which according to some other threads meant no leak. I'm stumped on this and everyone I ask says there's a leak somewhere but I think all these tests eliminated that as a possibility. As a broke college kid I've put way to much money into trying to figure this out. Any suggestions?