The Ford Barn

JOES31 · 06-11-2014, 01:39 PM

Just went out to try the propane trick and there is fuel all over the floor. Great and I put a new Viton float valve in. It didn't leak when I tested the float level. I set it for 5/8 below the top housing. I let it sit for over an hour to test for leaks. I would think there is contamination in the fuel but the tank was flushed and I have two filters on the line. The carb was sitting in Chem Dip for two days and rinsed with water then immediately sprayed with carb cleaner. I put a wire through all the passageways and re assembled it. It's got to be clean.

I guess I am back to the drawing board. I will disassemble it again and spray it with carb cleaner. I am not too thrilled with the mechanics of this Zenith. I'll put the other carb on and try and get the idle right otherwise I have a Tilitson I could rebuild and put on. Maybe they made Tilitsons because of the problems with these Zenith carb. They don't seem very reliable.

By the way when I look at the design of this carb I would like to know, when coming to a stop what stops the float from shutting off the fuel? I have heard of stalling problems when coming to a stop. Makes sense because of the design. Why wouldn't it stall?

Tom Thanks for the tip. When I gapped the rotor and cap I do remember that one of the contact points was gapped to far but then I had the other three perfect. I will get set the contact with the larger gap first and then file the other contacts. That might be the problem.

Everyone thanks for the help. I really appreciate all of you taking your time to help me.

Joe

Rex_A_Lott · 06-11-2014, 02:13 PM

Be sure to shake the float to be sure it didnt gas in it and sink on you.
More than likely you are right its trash.
There are just as many cussing Tillotsons ( I'm one) as there are Zeniths.

Dont give up on it, you''ll get it figured out. Good Luck!

Dick M · 06-11-2014, 02:40 PM

Does the arm of the distributor top plate make contact with both sides of gap (opening) in the distributor body when moving the advance rod from fully retarded to fully advanced? If not, your timing and idle will not be correct . The fix is to rotate the steering column to get the correct throw. Search this forum for the "Les Andrews timing video". It will give you step by step instruction for this fix.

06-11-2014, 01:39 PM	#1
JOES31 Senior Member Join Date: Apr 2014 Location: La Verne California Posts: 283	Re: Can't get the idle right Just went out to try the propane trick and there is fuel all over the floor. Great and I put a new Viton float valve in. It didn't leak when I tested the float level. I set it for 5/8 below the top housing. I let it sit for over an hour to test for leaks. I would think there is contamination in the fuel but the tank was flushed and I have two filters on the line. The carb was sitting in Chem Dip for two days and rinsed with water then immediately sprayed with carb cleaner. I put a wire through all the passageways and re assembled it. It's got to be clean. I guess I am back to the drawing board. I will disassemble it again and spray it with carb cleaner. I am not too thrilled with the mechanics of this Zenith. I'll put the other carb on and try and get the idle right otherwise I have a Tilitson I could rebuild and put on. Maybe they made Tilitsons because of the problems with these Zenith carb. They don't seem very reliable. By the way when I look at the design of this carb I would like to know, when coming to a stop what stops the float from shutting off the fuel? I have heard of stalling problems when coming to a stop. Makes sense because of the design. Why wouldn't it stall? Tom Thanks for the tip. When I gapped the rotor and cap I do remember that one of the contact points was gapped to far but then I had the other three perfect. I will get set the contact with the larger gap first and then file the other contacts. That might be the problem. Everyone thanks for the help. I really appreciate all of you taking your time to help me. Joe

06-11-2014, 02:13 PM	#2
Rex_A_Lott Senior Member Join Date: Jun 2011 Location: Upstate South Carolina Posts: 794	Re: Can't get the idle right Be sure to shake the float to be sure it didnt gas in it and sink on you. More than likely you are right its trash. There are just as many cussing Tillotsons ( I'm one) as there are Zeniths. Dont give up on it, you''ll get it figured out. Good Luck!

06-11-2014, 02:40 PM	#3
Dick M Senior Member Join Date: May 2010 Location: Ukiah, CA Posts: 510	Re: Can't get the idle right Does the arm of the distributor top plate make contact with both sides of gap (opening) in the distributor body when moving the advance rod from fully retarded to fully advanced? If not, your timing and idle will not be correct . The fix is to rotate the steering column to get the correct throw. Search this forum for the "Les Andrews timing video". It will give you step by step instruction for this fix.