Allis G, trouble starting

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   First of all, thanks to the folks who have helped me out over the last couple months... I appreciate the effort and thanks as well for your patience...

Here is the deal, as I understand it, with this AC-G:

engine is more or less properly timed.  Distributor points and condenser are new and set.
plugs are good, new wiring to all attachments, new engine coil and starter is rebuilt and running well.
air cleaner is properly sealed and there is no longer a back-draft (valves seems to be in good shape).
Carburetor has been cleaned, but original gasket is missing (just ordered a re-build kit), fuel filter and line are clear...

SO I can start this tractor without a tremendous amount of difficulty but it putters out, ESPECIALLY when you give it throttle: it dies.  Today I drove it around the barnyard in second gear, tried to put it into third and it sputtered out.  After that the tractor would not idle long without sputtering out.  We pulled off the carb and checked the floats and then cleaned the main jet.  Gas is moving through the carb obviously since we can start it up and sometimes drive it.
As I mentioned above the carbs original gasket (the "bowl gasket") was destroyed and replaced with a gasket fitted around the margins.. I am assuming that this is the problem but not sure.. would this cause a problem when the throttle is open?  Okay, enough for now.  Thanks!

	This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity.
	The Forum	Parts and Services	Unofficial Allis Store	Tractor Shows	Serial Numbers	History

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
John Kenny Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 06 Jan 2012 Location: Rhode Island Points: 56	Post Options Post Reply Quote John Kenny Report Post Thanks(0) Quote Reply Topic: Allis G, trouble starting Posted: 25 Feb 2012 at 2:07pm
	First of all, thanks to the folks who have helped me out over the last couple months... I appreciate the effort and thanks as well for your patience... Here is the deal, as I understand it, with this AC-G: engine is more or less properly timed. Distributor points and condenser are new and set. plugs are good, new wiring to all attachments, new engine coil and starter is rebuilt and running well. air cleaner is properly sealed and there is no longer a back-draft (valves seems to be in good shape). Carburetor has been cleaned, but original gasket is missing (just ordered a re-build kit), fuel filter and line are clear... SO I can start this tractor without a tremendous amount of difficulty but it putters out, ESPECIALLY when you give it throttle: it dies. Today I drove it around the barnyard in second gear, tried to put it into third and it sputtered out. After that the tractor would not idle long without sputtering out. We pulled off the carb and checked the floats and then cleaned the main jet. Gas is moving through the carb obviously since we can start it up and sometimes drive it. As I mentioned above the carbs original gasket (the "bowl gasket") was destroyed and replaced with a gasket fitted around the margins.. I am assuming that this is the problem but not sure.. would this cause a problem when the throttle is open? Okay, enough for now. Thanks!

Sponsored Links

oldironguy Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 01 Oct 2010 Location: Shoreview, Minn Points: 373	Post Options Post Reply Quote oldironguy Report Post Thanks(0) Quote Reply Posted: 25 Feb 2012 at 3:13pm
	I'm a simpleton about these things but one thing I've discovered about G's is that the fuel line from gas tank to carb is prone to plugging. On one of my Gs it was so plugged that i couldn't even blow compressed air through it. I reamed it out with a small wire, used lots of carb cleaner, and it cleared up my problem nicely. Good luck Dick

CTuckerNWIL Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: NW Illinois Points: 22825	Post Options Post Reply Quote CTuckerNWIL Report Post Thanks(0) Quote Reply Posted: 25 Feb 2012 at 3:40pm
	A bad gasket or one covering something that isn't supposed to be covered might cause your problem but it sure sounds like a fuel starvation problem to me. A partially plugged fuel line or crud in the bottom of the tank or in the sediment screen can let fuel through enough to run at an idle or more but cause starvation if the engine is under a load or running at a higher rpm. If you can choke it some to keep it running, I would say check out the fuel system from tank to carb.
	http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF

Dick L Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Edon Ohio Points: 5087	Post Options Post Reply Quote Dick L Report Post Thanks(0) Quote Reply Posted: 25 Feb 2012 at 3:47pm
	What firing order did you use?

jaybmiller Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Location: Greensville,Ont Points: 24670	Post Options Post Reply Quote jaybmiller Report Post Thanks(0) Quote Reply Posted: 25 Feb 2012 at 6:45pm
	I'll second the 'fuel starvation' answer,ha dthe same problem. I took the tank of my '53 dropped a light into it and saw a LOT of 'crud' on the bottom,so I spent 2 hours cleaning it really,really good. Then used new 3/8" 'rubber' gas line from tank to carb.Runs a LOT better.Yes, it ain't 'correct' but runs nice. If you don't like my fix, buy my G and do it 'correct'.lol
	3 D-14s,A-C forklift, B-112 Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water

mmccarty Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 06 Feb 2012 Location: SW Wisconsin Points: 86	Post Options Post Reply Quote mmccarty Report Post Thanks(0) Quote Reply Posted: 25 Feb 2012 at 9:42pm
	Just a thought for ya... When you say it is "more or less" properly timed, how much more or less? I bought one last month that had been sitting for while. After cleaning out the tank and carb, I got it running. It would start and run ok, but I couldn't put a load on it. I could drive it around by feathering the clutch to get it moving, but it would die under any significant load. I checked the timing with a timing light and found the timing was retarded 15-20 degs. After bringing it back to specs it had plenty of power.

Jason in MO Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 21 Feb 2011 Location: SE Missouri Points: 169	Post Options Post Reply Quote Jason in MO Report Post Thanks(0) Quote Reply Posted: 25 Feb 2012 at 11:41pm
	I had similar problems with mine. Found two problems that caused it. First, it was a tank of old gas that had plenty of water in it. Second, the fuel shut off valve wasn't opened all the way.

Bill Long Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Bel Air, MD Points: 4556	Post Options Post Reply Quote Bill Long Report Post Thanks(0) Quote Reply Posted: 26 Feb 2012 at 5:31am
	If a G is running as you describe it is usually gas. 1 Check the gas line 2 check the tank for junk 3 after this check the gas flow at the carb then re clean the carb. M Lot of work but the root cause of most problems like you describe. Let us know how it goes. Good Luck! Bill Long

mmccarty Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 06 Feb 2012 Location: SW Wisconsin Points: 86	Post Options Post Reply Quote mmccarty Report Post Thanks(0) Quote Reply Posted: 02 Mar 2012 at 10:04am
	Did you get it running ok?