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Re: Marvel Schebler - Idle Problem TSX-120 (Oliver
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Posted by Jerry/MT on May 27, 2006 at 20:46:33 from (67.72.98.45):
In Reply to: Marvel Schebler - Idle Problem TSX-120 (Oliver 60) posted by Woo on May 27, 2006 at 20:14:21:
The welding tip cleaners that I'm aware of are like little files. You are not supposed to clean out the passages with anything but compressed air and solvents. Some folks used monofillament fishing line. Some of the passages are drilled as an orifice and using an object like a welding tip cleaner can change the orifice size and effective area. Hopefully you didn't ream out anything critical in the pasages. Blow through the passages with compressed air or a pressurized spray can of carb cleaner to make sure they are clear.
A lot of ignition caused problems get blamed on the carburetor so I usually recommend checking the ignition first to make sure that isn;t your proble,? Do you have good spark and correct timing?
What was the level of vacuum you measured and was it pretty steady? How sure are you that you don't have any air leaks around the carburetor metering section? For example, throttle shaft leakage, carb to intake manifold connect flange air leakage, or intake manifold to head air leakage, etc. These can lean out your mixture so bad that you have to choke the the carb to get it to run. If you use some hand choke does it get any better? If it does, using ether or an unlit propane torch CAREFULLY spray it around the above mentioned locations and if your speed increases, you've found the leak.
Finally,does your governor have an adjustment on it? Some times they have a "damping screw" that puts a little preload on the governor system to prevent hunting at low speed.
That's all I can think of for now. Hope it helps.
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