Rough on Magneto - Found This

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Redleg
Posts: 26
Joined: Sun Jan 06, 2019 4:47 pm
First Name: John
Last Name: Neal
* REQUIRED* Type and Year of Model Ts owned: 1925 Roadster Pickup
Location: Alexandria, VA

Rough on Magneto - Found This

Post by Redleg » Fri Mar 20, 2020 4:50 pm

Hi Folks,

Everything new (engine and coils rebuilt, kevlar bands, oil, magneto terminal, etc.) with 500 miles/six months on my ‘25 RPU. Started running rough on magneto. Checking simple things first, I pulled the magneto terminal.
F8CA3133-C3AB-46B3-B802-FBC58A6F9B54.jpeg
I removed the little toupee and found I could pick it up off the workbench with a magnet. Seems the bits of kevlar picked up some metal filings. Reassembled and it runs great again on magneto.

Sometimes it is the simple thing.

John
John Neal
Virginia
‘25 Roadster Pickup

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walber
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Location: Bellevue, WA
MTFCA Number: 16421

Re: Rough on Magneto - Found This

Post by walber » Fri Mar 20, 2020 5:32 pm

I would immediately be removing the inspection plate on the top of the hogshead and be looking for anything untoward. I wouldn't expect to be finding fluff from the bands if everything is right. Hope it's OK but I'd be checking.

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Bill Robinson
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* REQUIRED* Type and Year of Model Ts owned: '21 Depot Hack, '25 Touring Car, '26 Roadster Pickup, '27 Tudor, & another '27 Tudor
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Re: Rough on Magneto - Found This

Post by Bill Robinson » Fri Mar 20, 2020 5:41 pm

Redleg- check regularly- if it happens again, then carefully inspect the three drums for a crack. But, if everything is new, as stated, probably not a problem. Maybe it's just one of the Kevlar bands that may not have gotten sealed good on the end and is un-raveling.


DHort
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Re: Rough on Magneto - Found This

Post by DHort » Fri Mar 20, 2020 6:23 pm

Hope you have an oil screen in your tranny, and if not might be time to put one in.

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Topic author
Redleg
Posts: 26
Joined: Sun Jan 06, 2019 4:47 pm
First Name: John
Last Name: Neal
* REQUIRED* Type and Year of Model Ts owned: 1925 Roadster Pickup
Location: Alexandria, VA

Re: Rough on Magneto - Found This

Post by Redleg » Fri Mar 20, 2020 7:20 pm

Thanks, folks. I changed the oil, cleaned the filter, and examined the drums. All looks good and running great.

John
John Neal
Virginia
‘25 Roadster Pickup

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George House
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* REQUIRED* Type and Year of Model Ts owned: ‘10 Maxwell AA, ‘11Hupp Model 20, Two 1914 Ford runabouts, 19 centerdoor, 25 C Cab,26 roadster
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Re: Rough on Magneto - Found This

Post by George House » Fri Mar 20, 2020 7:32 pm

‘Toupee’- that’s funny... you’ve received good advice John. Let me add my belief in the best accessory a Model T can have: outside oil line. I get plenty of flow from the mag terminal oil line to the front main bearing. You may have another design
I don’t know why I turned out this way. My parents were decent people.

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