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Ford 9N, 2N & 8N Discussion Forum
Show Parts for Model:

Negative Current through distributor

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Author  [Modern View]
smither

06-19-2017 15:37:04




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1949 N9. No start. Converted to 12V about 8 years ago. Noted positive cable getting quite warm when trying to start. Took cable off. Traced from key switch, through resister and to top of coil. Removed coil, and am getting negative complete current when placing one multimeter lead on negative battery post and the other lead on coil set screw inside distributor. I'm no mechanic, but this seems troubling. Suggestions?

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soundguy

06-20-2017 14:40:26




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 Re: Negative Current through distributor in reply to smither, 06-19-2017 15:37:04  
Post a pic of how you are measuring, showing the meter and its display.

Pos or neg ground setup? ( assuming neg )



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Dell (WA)

06-20-2017 02:32:00




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 Re: Negative Current through distributor in reply to smither, 06-19-2017 15:37:04  
smither........congratulations on owning a NEW 4-speed N9 tractor. Yeah, using a 12-volt cable onna 6-volt starter motor will gitt HOT. As a general rule, 12-volt cables gitt HOT when trying to start a 6-volt starter motor. (burnie-burnie) To ears used to the quiet whirr of their BelchFire-V8, the rumpa-rumpa of 6-volt N-Tractor is disconcerting. I worked as a calibration engr fer the Boeing company, and accurate amp-meters are VERY expensive. Yer N-Ampmeter is plenty accurate. Voltmeters are very handy. Like a Simpson 260 which has a 10-amp reading. Yer N-starter motor will draw about 150-amps, so you donna wanna due that. Now we gotta figger out this positive (+) negative (-) ground stuff. There are some obscure advantages to positive (+) ground, mostly hazzta do with yer sparkies. Recommend AutoLite 437's gapped 0.025. Ennytime you have starting issues, change yer sparkies NO ARGUE!!! Don't throw yer FLOODED sparkies away, just clean'n'dry 'em one-atta-time in HOT running engine and sav'um fer the next time. (and there will be a NEXT time)........HTH, Dell, yer self-appointed sparkie-meister

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9njunkie

06-19-2017 16:25:19




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 Re: Negative Current through distributor in reply to smither, 06-19-2017 15:37:04  
If it's a 1949 it would be a 8N .... Not a "N9"
1948 started production of the 8N's
Does make a lil difference some parts are a lil

Diffrent



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JMOR

06-19-2017 15:49:16




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 Re: Negative Current through distributor in reply to smither, 06-19-2017 15:37:04  
Quoting Removed, click Modern View to seeAre you REALLY measuring CURRENT, or voltage?? Converted to 12v, but to positive or negative ground?



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