stock 2G carb. question

Could someone tell me the initial setting for the two idle fuel-air mixture screws for the stock 2G carb. on a 225 v6. I can't find it anywhere in the FSM. I would assume you would screw them in till they make contact and then back them off a certain amount.

 

good question... dont have an answer.. but would like to know as well.

 

Iv'e got the backed out three complete turns right now and when you push the choke in it backfires and dies. Are they in too far or out too far.

 

Can't get it to idle without the choke pulled out.

 

Sounds like severe vacuum leak. As said, initial setting is screw to bottom (lightly) then back out 1-1/2 to 1-3/4 turn. If it won't idle with this setting (won't be smooth) then you have something else wrong.

 

:toetap: are you driving yet?

 

First, please don't take my comments the wrong way, I have no idea what your level of expertise is, or how much you know about carburetors, so I've started with a blank slate.
1. Engine not running. Turn mixture screws in (clockwise) until they stop-Gently ! They are the two screws side by side on the front base of the carburetor.
2. Back out mixture screws (counter clockwise) 1-1/2 turns, this is usually a good starting point, but every carb/engine combo is different.
3.Adjust Idle speed screw, on the side of the carburetor near the throttle linkage, back the screw out until it does not touch, watch the throttle plate and turn the idle speed screw in until the throttle plate just begins to move.
4. Start engine, Do not be alarmed if the engine is running well above idle speed. Turn the idle speed screw to obtain the desired idle speed. If the engine will not idle at the desired idle speed, check for vacuum leaks by running your fingers over the carb base plate and all the parting lines between carb parts, ensure there are no open(unblocked) vacuum ports, vacuum hoses should connected on BOTH ends, if you can hear a high pitched whistle anywhere you have a vacuum leak. Just because all screws and bolts are tight, doesn't mean it won't leak!!!
There are several ways to check for vacuum leaks, while the engine is running, spray propane from an UNLIT propane torch around the carburetor, or WD 40 using the small spray tube (within a 1/2" for both) on the same places you felt with your fingers. When you hear the engine speed change, you have found your vacuum leak.
Once you get rid of any vacuum leaks and get the engine to idle, hook up a vacuum gauge to the engine and adjust the carb mixture screws to the highest vacuum reading, you may have to adjust your idle speed again with each mixture adjustment. Keep going back and forth from mixture screws to idle speed until the desired results are obtained i:e; correct idle speed/highest vacuum reading.
Other things to check: Return springs in place and not binding, throtlle linkage in place and not binding, Is this carburetor new, rebuilt, other? By now you should be running, Good luck, please keep us posted.