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Case SC???????


 
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Jon R. Young
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PostPosted: Sun Oct 14, 2012 11:51 am    Post subject: Case SC??????? Reply to specific post Reply with quote

I have a Case SC I have been tryin to get runnin. It has been sittin quite a few years. I have cleaned the carburetor, all the ports are clear and there is gas gettin to it. The manifold is clean, the points are gettin spark and I believe the plugs and wires are hooked up right, the firin order is 1,3,4,2. Does anybody have any ideas of what could be wrong with it? I have tryed to pull start it multiple times and it will run for a few seconds with startin fluid but then it will just die as soon as it runs out fluid
 
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Bill Brackemyer
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PostPosted: Sun Oct 14, 2012 12:21 pm    Post subject: Re: Case SC??????? Reply to specific post Reply with quote

You say that you cleaned the carb, but did you clean the fuel line and the sediment bowl thoroughly as well? Those can varnish up as well. If it will run on starting fluid then it will run on gas. Make sure it is getting it.
 
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Jon R. Young
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PostPosted: Sun Oct 14, 2012 12:48 pm    Post subject: Re: Case SC??????? Reply to specific post Reply with quote

I have replaced the sediment bowl and gas is comin out in a steady stream of the fuel line. I believe that Somethin is tore up in the head I will probably just sell it. Thanks for the suggestion though.
 
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todd Hamilton
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PostPosted: Sun Oct 14, 2012 1:22 pm    Post subject: Re: Case SC??????? Reply to specific post Reply with quote

Make sure the float is not binding on the little axle in the Carb. Old zenith carbs are bad about that. Are you getting vacuum at the air intake on the Carb? If not with Carb off are you getting vacuum at the intake manifold?
 
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Adirondack case guy
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PostPosted: Sun Oct 14, 2012 1:51 pm    Post subject: Re: Case SC??????? Reply to specific post Reply with quote

Pacience My Lad Pacience!
If the tractor had set for an amount of time as you stated, chances are a valve or two were stuck. When you tirned it over by towing or what ever, you could have bent some push rods. Take the valve cover off and crank it over by hand, to check valve movement. If you have some valves stuck, you should not have much of a problem freeing them. The bent pushrods?? can sometimes be straightened, but they will fatigue in time, because you will never get them perfect.
Don't give up on it so easily. You will like it when you have it running and be able to use it.
Paint and cosmetics can come later.
Loren
 
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casecollectorsc
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PostPosted: Sun Oct 14, 2012 3:03 pm    Post subject: Re: Case SC??????? Reply to specific post Reply with quote

Is the load needle open 1 1/2 turns? Pulled a DC for an hour one time, only to find out my nephew turned the load needle shut instead of turning off the gas at the tank!
 
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Jon R. Young
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PostPosted: Sun Oct 14, 2012 4:20 pm    Post subject: Re: Case SC??????? Reply to specific post Reply with quote

Yes the needle is open 1 1/2 turns, the float is not stuck, and I am not sure about it gettin suction, I will have to check I will also take off the valve cover and see if anything is stuck or bent. Thanks for the help!
 
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Case Nutty 1660
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PostPosted: Sun Oct 14, 2012 4:25 pm    Post subject: Re: Case SC??????? Reply to specific post Reply with quote

just my two cents but if she is sucking either in I am wondering if you still have a port blocked in the carburator I have had them drive me nuts before please give us a update on what you find cnt
 
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j hikemper
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PostPosted: Sun Oct 14, 2012 4:37 pm    Post subject: Re: Case SC??????? Reply to specific post Reply with quote

check that carburator, but 1st , make sure that it has vacuum at the air filter ,, sc were infamous for burnigg thru exhaust and intake manifolds , therefore sharing gases , and when that happens it will not have much vaccume ,, if that is your problem .george md repairs them , also , i have a repaired one here that i could sell
 
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casenut1
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PostPosted: Sun Oct 14, 2012 4:51 pm    Post subject: Re: Case SC??????? Reply to specific post Reply with quote

Jon where are you located at.
 
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Jon R. Young
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PostPosted: Sun Oct 14, 2012 4:55 pm    Post subject: Re: Case SC??????? Reply to specific post Reply with quote

I am located in Southern Ohio. I will keep y'all updated.
 
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VAC400
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PostPosted: Sun Oct 14, 2012 5:32 pm    Post subject: Re: Case SC??????? Reply to specific post Reply with quote

Jon, First take a compression test or a leak down test to check your cylinders. If OK then take a known good spark plug ,hose clamp and add a piece off wire an ground the other end. Now crank it over an see if you have spark at the plug. If you do then you know you are getting fire to the plug. So now pull the carb. and remove the jets an take some torch tip cleaners and run them through the jets and holes if possible. Take carb cleaner an shot through the ports.If you can get it to run long enough take a propane torch no flame and run it close to the intake gasket to see if you have a problem, if the engine gains speed you have a bad gasket.
I hope this helps. Jerry from Northern Ohio
 
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fixerupper
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PostPosted: Sun Oct 14, 2012 6:00 pm    Post subject: Re: Case SC??????? Reply to specific post Reply with quote

If the compression is way down it won't have enough intake suck to make the carb work. It will suck enough up to fire a little on ether. Went through that exasperation a year ago trying to get a low compressioned VAC running.

If the compression is reasonably good, then there are fuel delivery problems somewhere.
Seems like those Zenith carbs are real picky about a little dirt in the idle passages. Jim
 
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