Question:

Have 65 mustang w/ 2100 carb. Floods so bad car will not run watched your video on rebuild and order a new float... Is this the way you would go?

Answer:

• If you have a black nitrophyl float, then by all means replace it. For brass, heat up a pan of water just prior to boiling. Immerse the float. Any crack, or hole will show up with bubbles.
• Check the fuel pump pressure. Compare with specifications from your engine manual. New pumps are especially suspect. No specs? Look for about 4.5 lbs.
• Check the needle & seat - look under the seat and make sure there isn't an extra washer, or residue under the gasket. Oh and yes, did you remember to put a gasket under the seat. Make sure it isn't cracked.
• Gently hold down the needle into the seat and blow into the inlet hole. Air should not get through. The needle has a viton tip and is easily damaged if you put any pressure on it while adjusting the float level.
• Check the float level.
• Make sure the float isn't rubbing on anything. It could be catching on the red rubber check valve. Cut the stem off if it is catching.
• Move the float up and down by hand to feel any catching. The float pin may be worn.
• Check for venturi leak. This would account more of a rich state rather than flooding. At idle look down the carburetor to see if the venturi is dripping gas. If so, then the main discharge is leaking. Tap the check ball lightly to form a better seat. Is there a check weight, or spring above the check ball?