I have an '80 Jeep CJ5 with a '76 GM 5.7L 350 V8. It's got a 2bbl Rochester 2GC carb. I rebuilt the carb and have got it running. The issue is it iddles very high rpms and the idle screw is not even resting on the idle cam... for more info please go JEEPFORUM (http://jeepforum.com/forum/showthread.php?t=660318) to read more about the issues. Reply to this site would be fine. I believe the real issues are started to list on the 2nd page of the jeep forum posting. Thanks.:banghead: Moose

http://jeepforum.com/forum/showthread.php?t=660318 is the link to my original post...

If the throttle plates are properly aligned and closing all the way, you need to look for external vacuum leaks. The only way to verify whether the throttle plats are fully closed is to remove the carb and inspect the plates in their bores.

That disconnected EGR valve is highly suspect, as well as any PCV valves, and any power brake vacuum boosters. If the EGR is removed and blanked off, and the external vacuum lines are disconnected and capped, that should eliminate most of the usual suspects for vacuum leaks.

whatever you do, resist the urge to install an Holley carb unless it is a 1685 (the last good Holley made). Instead, you'd be ahead of the game to fit up a 4MV Rochester, or just bite the bullet and install a TPI system (ideal for a Jeep).

I have an '80 Jeep CJ5 with a '76 GM 5.7L 350 V8. It's got a 2bbl Rochester 2GC carb. I rebuilt the carb and have got it running. The issue is it iddles very high rpms and the idle screw is not even resting on the idle cam... for more info please go JEEPFORUM (http://jeepforum.com/forum/showthread.php?t=660318) to read more about the issues. Reply to this site would be fine. I believe the real issues are started to list on the 2nd page of the jeep forum posting. Thanks.:banghead: Moose

I would first check the throttle plates and insure that at idle they are closed....if they are ,,,check the float for proper adjustment and needle for wear and contamination...