This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity.
The Forum Parts and Services Unofficial Allis Store Tractor Shows Serial Numbers History
Forum Home Forum Home > Allis Chalmers > Farm Equipment
  New Posts New Posts
  FAQ FAQ  Forum Search   Events   Register Register  Login Login


Burning up coils On my AC-b
 Post Reply Post Reply
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
LBOW View Drop Down
Bronze Level
Bronze Level


Joined: 25 Apr 2023
Location: Spokane
Points: 16 		Post Options Post Options   Thanks (0) Thanks(0)   Quote LBOW Quote  Post ReplyReply Direct Link To This Post Topic: Burning up coils On my AC-b
    Posted: 02 Aug 2023 at 3:22pm

Just wondering what would make 2 wico x coils go bad in a short amount of time, I wasn't running it very hard, but I was starting and stopping a lot. Second coil didn't even last a day. I have a distributor setup from a CA, I think I'll try running that instead but I'm curious why a coil would fail so quickly... Thanks
Back to Top
Sponsored Links


Back to Top
Ken Mn View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 10 Nov 2021
Location: Zumbrota Mn.
Points: 11 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken Mn Quote  Post ReplyReply Direct Link To This Post Posted: 02 Aug 2023 at 3:32pm
LBOW: Using Wico coils, does that mean you are running a magneto?
Back to Top
LBOW View Drop Down
Bronze Level
Bronze Level


Joined: 25 Apr 2023
Location: Spokane
Points: 16 		Post Options Post Options   Thanks (0) Thanks(0)   Quote LBOW Quote  Post ReplyReply Direct Link To This Post Posted: 02 Aug 2023 at 3:49pm
Yes, wico x magneto... ran great for a long time, now I'm afraid to order another coil... (Actually a prestolite)

Edited by LBOW - 02 Aug 2023 at 3:51pm
Back to Top
Ken Mn View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 10 Nov 2021
Location: Zumbrota Mn.
Points: 11 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken Mn Quote  Post ReplyReply Direct Link To This Post Posted: 02 Aug 2023 at 4:48pm
As long as you do not have any battery power connected to your magneto you are not burning up the coil. I have heard though that resistor spark plug wires are bad. They must be wire type and do not gap the spark plugs wider than spec. Doing so requires the coil to have to build up the voltage higher than normal before the plugs fire and that can cause the insulation in the coil to break down and short out ruining the coil.
Back to Top
LBOW View Drop Down
Bronze Level
Bronze Level


Joined: 25 Apr 2023
Location: Spokane
Points: 16 		Post Options Post Options   Thanks (0) Thanks(0)   Quote LBOW Quote  Post ReplyReply Direct Link To This Post Posted: 02 Aug 2023 at 5:10pm
Thanks.
The wires and plugs are correct but could it have anything to do with the condenser spiking the voltage...? I never did change it out. And as I was working on the hydraulics I was crank starting it a lot... No battery
Back to Top
Ken Mn View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 10 Nov 2021
Location: Zumbrota Mn.
Points: 11 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken Mn Quote  Post ReplyReply Direct Link To This Post Posted: 02 Aug 2023 at 6:49pm
The condenser won't cause a coil to fail.
Back to Top
HudCo View Drop Down
Orange Level
Orange Level
Avatar

Joined: 29 Jan 2013
Location: Plymouth Utah
Points: 3936 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HudCo Quote  Post ReplyReply Direct Link To This Post Posted: 02 Aug 2023 at 10:56pm
make sure your kill wire is not getting battery voltage some how
Back to Top
JC-WI View Drop Down
Orange Level Access
Orange Level Access
Avatar

Joined: 11 Sep 2009
Location: wisconsin
Points: 34353 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JC-WI Quote  Post ReplyReply Direct Link To This Post Posted: 02 Aug 2023 at 11:45pm
Same thought I had...
"make sure your kill wire is not getting battery voltage some how "

 Or shorting out before the kill switch. Disconnecting the grounding wire and still no spark, that is a puzzle unless there's dirt or corrosion in the points... or bad grounding of the points... or of the coil.
Magnets strong?
He who says there is no evil has already deceived himself
The truth is the truth, sugar coated or not. Trawler II says, "Remember that."
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 11.10
Copyright ©2001-2017 Web Wiz Ltd.

This page was generated in 0.080 seconds.


Help Support the
Unofficial Allis Forum