1945 G model Carburetor

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   First, let me say thank you, for allowing me to be a part of this community. My background is automotive technician. I am a retired Marine and line tech. A friend has a 1945 G Allis and Chalmers tractor with a TSV 13 carburetor on it. He had the engine overhauled a year ago, and it ran great for about an hour. He said it started acting as if it was running out of gas, and has not run correctly since. 
I removed the carburetor, took it completely apart and cleaned it. I ordered a kit from Amazon to rebuild the carb, and replaced everything in the kit. While tearing down the carb, I noticed a foam type screen on the adjusting screw on the bottom of the carb. The kit didn't have this in it, and I can't find a picture anywhere showing it. I put the carb back together, leaving out the torn screen, and we still have the same problem. I adjusted the air/fuel mixture screw on top to one and half turns out. The bottom adjuster, I set at one turn out. The plugs keep fouling with fuel. I am not sure of the firing order, but the two middle plugs are always covered in fuel and the two outside are not. The tractor tries to run but will not. Puffs of dark gray smoke come from the exhaust when trying to start it. 
Can someone tell me what the foam type screen is for? The bottom adjuster seems very loose, and it seeps fuel from it. Could this be a timing issue also? 
Any help is highly appreciated. 

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cabinfourus Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 03 Jun 2025 Location: Asheville, NC Points: 3	Post Options Post Reply Quote cabinfourus Report Post Thanks(0) Quote Reply Topic: 1945 G model Carburetor Posted: 03 Jun 2025 at 11:48am
	First, let me say thank you, for allowing me to be a part of this community. My background is automotive technician. I am a retired Marine and line tech. A friend has a 1945 G Allis and Chalmers tractor with a TSV 13 carburetor on it. He had the engine overhauled a year ago, and it ran great for about an hour. He said it started acting as if it was running out of gas, and has not run correctly since. I removed the carburetor, took it completely apart and cleaned it. I ordered a kit from Amazon to rebuild the carb, and replaced everything in the kit. While tearing down the carb, I noticed a foam type screen on the adjusting screw on the bottom of the carb. The kit didn't have this in it, and I can't find a picture anywhere showing it. I put the carb back together, leaving out the torn screen, and we still have the same problem. I adjusted the air/fuel mixture screw on top to one and half turns out. The bottom adjuster, I set at one turn out. The plugs keep fouling with fuel. I am not sure of the firing order, but the two middle plugs are always covered in fuel and the two outside are not. The tractor tries to run but will not. Puffs of dark gray smoke come from the exhaust when trying to start it. Can someone tell me what the foam type screen is for? The bottom adjuster seems very loose, and it seeps fuel from it. Could this be a timing issue also? Any help is highly appreciated.

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Steve in NJ Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Location: Andover, NJ Points: 11952	Post Options Post Reply Quote Steve in NJ Report Post Thanks(0) Quote Reply Posted: 10 Jun 2025 at 8:14am
	The TSV Carbs as small as they are have their issues. From lose throttle shafts to deteriorating bowl floors, the white metal these things are made out of are what causes most of the problems. That loose enrichment assy, another issue with the white metal. Threads get worn out. I've found if they're not to worn out, a little pipe dope on the threads and then thread the assy in till its snug not tight will sometimes remedy that problem assisted with a gasket. Not sure what foam thing yer' talkin' about. Firing order on a G is 1-3-4-2. Number one being at the Radiator. Check the floats to see if they are taking on fuel. Pull em' out, and give em' a little shake. If you hear sloshing, the floats are sinking and its flooding. If you have Champion Spark Plugs in that engine, take them out, throw em' away and install either 295 Autolites or NGK plugs. HTH. Steve@B&B
	39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife

Hubert (Ga)engine7 Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Jackson Cnty,GA Points: 6429	Post Options Post Reply Quote Hubert (Ga)engine7 Report Post Thanks(0) Quote Reply Posted: 10 Jun 2025 at 9:08am
	Welcome to the Forum and thank you for your service. Steve is the best on carburetors and ignition for the vintage Allis tractors. He gives great advice and he also can do parts and rebuild if needed. Hopefully things are improving around Asheville. It was quite a mess when I was up there at the end of October.
	Just an old country boy saved by the grace of God.

mdm1 Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Onalaska, WI Points: 2672	Post Options Post Reply Quote mdm1 Report Post Thanks(0) Quote Reply Posted: 10 Jun 2025 at 10:44am
	Since the engine is in backwards #1 is at the rear of the tractor. Crank pulley end. If the foam is on the threaded exterior part of the adjusting screw was it put there to maybe stop the screw from turning like a spring would? Just a thought
	Everything is impossible until someone does it! WD45-trip loader 1947 c w/woods belly mower, 1939 B, #3 sickle mower 1944 B, 2 1948 G's. Misc other equipment that my wife calls JUNK!