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Brian G. NY 
Orange Level
Joined: 12 Sep 2009
Location: 12194
Points: 2197
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 Posted: 19 Jul 2019 at 12:01pm |
 DougS wrote:
Before you do anything with the timing, check the point gap. If the dwell is off three degrees, the timing will be off six degrees.
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Is that true?
I didn't realize there was a direct correlation.
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bhaynes
Silver Level
Joined: 23 Feb 2019
Location: Chattanooga, TN
Points: 105
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Posted: 19 Jul 2019 at 2:07pm |
Jaybird,
That is exactly my scenario. I have my family's `48 WD. It sat for 2 years and I completely restored it, down to the block. New wiring harness, spark plugs, wires from magneto to plugs. New Magneto, Just lined the gas tank, new fuel line, bowl, etc... The carburetor needs to be replaced, but it has a new kit in it and is completely cleaned as well.
It will run all day long, but just doesn't "sound" right to me. It sounds kind of like sputtering, but just rough. Not smooth at all. When it is idle, it sounds good to me. But under load / driving, it is rough sounding.
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bhaynes
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Joined: 23 Feb 2019
Location: Chattanooga, TN
Points: 105
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Posted: 19 Jul 2019 at 2:10pm |
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Mine is similar. How do you adjust a magneto while running? Or can you? :)
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WF owner
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Joined: 12 May 2013
Location: Bombay NY
Points: 4378
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Posted: 20 Jul 2019 at 6:03am |
You adjust a mag much the same as you would a distributor. Loosen both the top and bottom bolts that hold the mag to the governor housing and turn the mag.
As said above, it's possible (in a distributor) that the advance weights aren't moving freely. If the tractor was running good before, the only way for the timing to be off is if someone manually moved it.
I suspect your rough run is a dirty carb. If you use gas with ethanol, it tends to clean things to the point where there are a lot of snall particles moving around that can plug up some of the small orifices it the carb. Try removing the carb abd spraying carb lceaner through all the passages, then follow with compressed air. |
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frnkeore
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Joined: 07 May 2019
Location: Southern Oregon
Points: 362
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Posted: 20 Jul 2019 at 11:37am |
Brian G. NY wrote:
DougS wrote:
Before you do anything with the timing, check the point gap. If the dwell is off three degrees, the timing will be off six degrees.
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Is that true?
I didn't realize there was a direct correlation. |
The correlation is the position of the crankshaft, when the points, actually open. W/o moving the distributor housing, if you close the gap, it will open the points sooner, advancing the the point, in which the coil fires. This is the way I time my vehicles, after setting the points. 
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Frank
1959 D17 Series I #24001+, '59 D14
'55 & '59 Ford 850 & 861
Ferguson TO 35 Deluxe, Oliver 70 and 5 more.
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SteveM C/IL
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Joined: 12 Sep 2009
Location: Shelbyville IL
Points: 7953
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Posted: 20 Jul 2019 at 4:43pm |
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i keep wondering if the plug wires have been crossed. Easy to do
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Buckyman
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Joined: 17 Nov 2016
Location: SW Wisconsin
Points: 74
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Posted: 20 Jul 2019 at 7:58pm |
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Thank you very much ac fleet! All I had to do was loosen the clamps(on the distributor) and make almost a quarter turn clockwise and now it runs like a top!
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bhaynes
Silver Level
Joined: 23 Feb 2019
Location: Chattanooga, TN
Points: 105
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Posted: 20 Jul 2019 at 8:23pm |
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I don’t know how I can do that with a magneto? I can’t turn the magneto while it’s running. LOL it doesn’t work like that. How would I be able to adjust it?
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