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  #1  
Old 05-23-2013, 06:14 PM
cub-ed cub-ed is offline
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Default How to test coil
I'm currently having issues when I go up hill or put a load on the tractor other than flat surface running with pto. I just rebuilt the motor this winter and was running great until this last time I went to mow the lawn. Now it isn't slowing down but almost as if I'm misfiring or a loose wire causing points or what I'm assuming weak coil. Is there anyway to test the coil, or is there other suggestions? I did check wires to ensure terminations were tight.
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  #2  
Old 05-23-2013, 06:20 PM
J-Mech J-Mech is offline
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Originally Posted by cub-ed View Post
I'm currently having issues when I go up hill or put a load on the tractor other than flat surface running with pto. I just rebuilt the motor this winter and was running great until this last time I went to mow the lawn. Now it isn't slowing down but almost as if I'm misfiring or a loose wire causing points or what I'm assuming weak coil. Is there anyway to test the coil, or is there other suggestions? I did check wires to ensure terminations were tight.
If it's running fine other than when loaded heavy or going up hill, it's more than likely a carb/ fuel problem. Doesn't sound like a weak spark/ ignition to me. I would try adjusting the carb. If it doesn't act like it changes it any, take it off and disassemble and clean it. There are alot of people who think they have a clean carb, but a small piece of dirt/ rust will plug a jet even if it was "clean" on the last disassemble. If you were having a weak spark issue, it would affect it other than under hard load.... Disclaimer: I cannot hear or see your engine, I am diagnosing based on what I'm reading.
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Old 05-23-2013, 06:27 PM
cub-ed cub-ed is offline
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I did just rebuild it as well and installed a new fuel filter in the line, perhaps the filter is clogged, I will try this first.
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  #4  
Old 05-23-2013, 07:06 PM
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CADplans CADplans is offline
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I had that EXACT issue on my 1000. The condenser wire came loose, and made intermittent contact. I was surprised it even run with the wire disconnected.

It runs MUCH better with that wire connected!!

The condenser could be defective, also!!
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  #5  
Old 05-23-2013, 07:29 PM
J-Mech J-Mech is offline
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I had that EXACT issue on my 1000. The condenser wire came loose, and made intermittent contact. I was surprised it even run with the wire disconnected.

It runs MUCH better with that wire connected!!

The condenser could be defective, also!!
Didn't it backfire? Or was it just weak?
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  #6  
Old 05-23-2013, 07:40 PM
cub-ed cub-ed is offline
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CADplans, I did check all wire connections and seemed to be all tight. But that is what I am thinking I may have a problem in, when full throttle with pto running there is no issue, when the same as before but moving on level ground slowly or down hill there is no issue, when full throttle, pto running, and going up hill or fast acceleration there tends to be almost "dead" spots where the motor basically cuts out for a second then fires again, any thoughts?
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  #7  
Old 05-23-2013, 09:33 PM
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dvogtvpe dvogtvpe is offline
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to check the coil remove the plug wire. unhook the wires in the + & - sides. hook up an ohm meter to the + & - sides of the coil, should be 5 ohms.
I'd be surprised if its the coil. when you cleaned the carb did you remove the brass tube (emulsion tube) that screw's into the bottom of the carb? they have a habit of collecting allot of crap in there.
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Old 05-24-2013, 05:40 AM
cub-ed cub-ed is offline
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Yup, I let her soak for 4 days in carb cleaner, then used a wire to clean out the tube and holes.
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Old 05-24-2013, 09:03 AM
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Didn't it backfire? Or was it just weak?
Really, it was so long ago, I can not remember for sure, I really do not remember it backfiring, just weak.

The 10HP is an easy going engine, it doesn't take much to keep it happy. Nothing has to be perfect, carb settings, point settings, etc... the 10HP always runs real good.

The 14HP's I have owned on the other hand,,,,,,
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