H3 carb tsx879
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=134826
Printed Date: 03 Aug 2025 at 9:21am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: H3 carb tsx879
Posted By: badtrack
Subject: H3 carb tsx879
Date Posted: 08 Feb 2017 at 3:05pm
| Only runs well with choke partly on.new valves and rings. New carb kit and cleaned carb 3 times. Any ideas on why I can not a just to run without a little choke? |
Replies:
Posted By: DiyDave
Date Posted: 08 Feb 2017 at 6:11pm
| Choke shaft felt seals might be leakin... |
Posted By: badtrack
Date Posted: 13 Feb 2017 at 10:09am
|
After new carb kit choke shaft & throttle shaft fit well. Carb is a tax 879 type B. The engine block is am5363 & head is am5481. Engine # h1382r. I believe it's a 160 cid engine. Am I correct. ? The carb maybe for a 149 cod engine. Could this make the load jet too small? |
Posted By: DiyDave
Date Posted: 13 Feb 2017 at 5:20pm
| I may be wrong, but I think your carb is for the 160. On tractors this old, sometimes parts that "will fit" are not necessarily the right ones. How does the bore of the carb compare to the bore of the manifold? |
Posted By: Hyperpack
Date Posted: 14 Feb 2017 at 2:31pm
|
I have a good running Carb for the 149, I would be willing to trade for the one you have. Hyperpack
|
Posted By: badtrack
Date Posted: 14 Feb 2017 at 3:03pm
| Thanks for the tip on checking the intake manifold compared to the carb venturi. The tsx879 is smaller by a quarter inch in diameter. My book showes a tsx 869 for the 160 cid engine. Don't know if I am on the right track yet. The engine runs well with some choke. |
Posted By: kweeber
Date Posted: 13 Apr 2017 at 7:31pm
| Mine did the same thing and I found a small air leak where the carb met the intake manifold. Found it by spraying a little ether around carb, sped up when i hit the leak. |
Posted By: Ferdinand
Date Posted: 13 Apr 2017 at 7:42pm
Yes, it can be exactly what kweeber says and often is the case. You can use a can of FLAMMABLE brake Kleen or similar if you don't have Ether. Use one of those hollow sticks in the spray can nozzle to pinpoint where the leak is. On the other hand, it's possible that the main jet is clogged and the choke is allowing the engine to pull more fuel through the idle circuit. If you have been running Ethanol added fuel it will mess up a carburetor. Ooops, I just reread your post. Already put a kit in it. Go with the air leak. ------------- Because narrow is the gate, and narrow is the way, which leads unto life, and few there be that find it. Mathew 7:14 |
kweeber wrote:Posted By: Kipn
Date Posted: 13 May 2017 at 6:43am
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Had that happen with mine. Gravity fed carb and crap in tank partially blocked fuel line. ------------- 1961 H3 |