Its on my '84 TA L69 with stock q-jet. I had the engine and carb rebuilt and after I put it back together I get a bunch of gas in the line that comes from the front of the carb to the 4 connection vac thing, to the ported vaccum switch on the intake to the charcol can. I pulled the carb off my '85 that runs great and it does the same thing... Any ideas? It also won't idle under 1800 rpm..

 

Check the vent lines going to the gas tank.
Could be blocked.

 

I believe that if either vacumm diaphragm in that circuit is bad, it will suck gas. Both the top of the purge valve (thing w/ 4 hoses running into it) and the other one down by the canister must be able to hold the line open. I just replaced both of these on my car, now it doesn't suck gas just vapors like it is supposed to. The one by the canister is discontinued, you'll have to get one out of a junkyard.
John

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• 84 Firebird w/ T/A ground effects
• 350 4bbl (quadrajet)
• Automatic Transmission
• Non-leaking T-Tops (new rubber all around)
• Working headlight motors (new parts)

Mods: A/C Delete, 14" K&N open element, 170* stat, ram-air hood, Accel cap & rotor, MSD Super Conductor Wires, 24mm solid rear & 36mm hollow front sway bar w/ PST polygraphite bushings & endlinks, Spohn SFCs, WS6 springs, SLP 1 3/4" Jet-hot coated headers, Hooker 3" cat-back, Catco high-flow cat, Comp Cams High Energy 268 cam, AFR 190 heads, Weiand Action+ intake, Comp Pro Magnum 1.6:1 Steel Roller Rockers, Summit 4130 steel pushrods (stock +.100"), Moroso Oil Pan with trap doors, windage tray and crankshaft scraper, poly graphite motor mounts, K&N oil filter and Mobil 1 synthetic.

http://www.homepagez.com/350thirdgen/

 

Hmm.. I'll try swapping them off my '85 first and see if that fixes it... Thanks

 

Well I got a new vac purg valve (4 connector thing) and that looks like it fixed the gas in the line. But its still not idleing under 1800 rpm... I don't think its a vaccum leak so that is probably my problem I know my timing isn't right but it should be close enough to idle...