Fri Sep 18, 2009 10:11 am
Ok, well this one has a Carter UT carb. Idle is off and the engine only runs solid when the choke is fully engaged as in choke plate in the vertical position. Not sure how to se the idle or what the idle rpm's should be. Help would be appreciated. I know that this is a fuel issue only. When the carb was split, float appeared to work properly, the bowl is clean, blew out all of the orifices and fuel/carb cleaner flows freely. Not sure about needle. May have to take it all apart but would prefer not to at this stage if possible. Thoughts, ideas, comments are all welcome. Now that the H is pretty well ready to rock, gotta get the Super A up and running so she can have excercise before she is put up for the winter.
Second area... Idled (high with the choke fully closed - vertical position) and after 10-15 minutes we had a lot of coolant spraying out of the overflow tube and out of the rad cap. This sounds like a blockage to me.. am I on the right track? Again thoughts, ideas, comments are all welcome.
Fri Sep 18, 2009 12:16 pm
I had a similar issue with only running with choke pulled. Culprit was leaking manifold gasket letting too much air in and leaning the mixture. Check manifold and carb gaskets. One test is to spray starting fluid around carb and manifold and see if engine speed changes. Not recommended for a HOT engine.
Mon Sep 21, 2009 9:11 am
The coolant spitting out problem might be as simple as an over-filled radiator, although if it is spewing from around the radiator cap it might be time to replace that cap or at least make a new gasket for it.
On the fuel issue, did you check that there is sufficient fuel flow TO the carburetor?
Tue Sep 22, 2009 8:32 pm
Carb. Set the idle and main jet screws out about 1 1/4 to 1 1/2 turn. This will get the tractor running. After warm up adjust the screws.
Low idle 425 rpm. No load high: 1875 rpm.
((((((Second area... Idled (high with the choke fully closed - vertical position) and after 10-15 minutes we had a lot of coolant spraying out of the overflow tube and out of the rad cap. This sounds like a blockage to me.. am I on the right track?)))))Maybe. Tractor is not supposed to be able to run with the choke fully closed.
1) Rebuild or service the carb. It's as simple as the Cub's.
2) Ignition timing - static time - same procedure as Cub.
3) Remove the lower water manifold and use the tool to clean out the crub between and behind the cylinders and radiator base.
Edit. Get behind and around the #4 cylinder, REALLY GOOD. Crud has tendency to build up bad in this area. The crud build up could be the cause of the overheating problem.
Powered by phpBB © phpBB Group.
phpBB Mobile / SEO by Artodia.