Garden Tractors - no spark

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no spark

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Garden Tractors
Forum Description: A great place to discuss the Simplicity and Allis Chalmers Garden Models
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=83446
Printed Date: 22 Nov 2024 at 1:22pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: no spark

Posted By: wildbill26
Subject: no spark
Date Posted: 19 Jan 2014 at 2:47am

ok this may be long winded but here goes. i have a b 12 that has no spark, was that way when i got it, so i put a new coil, plug, points and condencer in it. i also hard wired it insted of using the insilated lug, i cleaned up the magnets on the flywheel set both points and coil gaps per manual put it back together and still nothing, i did disconect the key switch( if i rember it just grounds it to kill spark) and still nothing, so i pulled the motor again to check the coil gap, and noticed this time there was writing on the coil that you could hardly read that said this side out, so i thought mabey i had it on wrong so i switched it around and still nothing, so im stumped. so anyone have any thoughts or sugestions? i have thought now about going to an external coil but will have to resurch that, thanks

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1950 wd wide front w loader
1940 b, 1939 m crawler

Replies:

Posted By: AaronSEIA
Date Posted: 19 Jan 2014 at 7:50am

I've read more than once of a new condenser being bad out of the box. Might also want to roll the engine over and make sure the point plunger is moving. Another option would be a Nova or Mega Fire solid state setup. Around $12 on eBay and no more points. You can mount it in the points box and no one will ever know. I suppose it's possible your coil or plug wire is bad too.
AaronSEIA

Posted By: littlemarv
Date Posted: 19 Jan 2014 at 8:08am

Once when I installed the points I got the retainer for the plunger boot out of place and it grounded the points, so no spark.

Something to keep in mind.......

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The mechanic always wins.

B91131, WC23065, WD89101, CA29479, B1, Early B10, HB212, 416H

Posted By: wildbill26
Date Posted: 19 Jan 2014 at 9:34am

little marve i will check that, aaron its one of those mag coils with the plug wire built into it,the plunger is working, how dose the solid state setup work? do you still need an external coil? thanks

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1950 wd wide front w loader
1940 b, 1939 m crawler

Posted By: wildbill26
Date Posted: 19 Jan 2014 at 9:47am

i found the mega fire on ebay i see how it works now

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1950 wd wide front w loader
1940 b, 1939 m crawler

Posted By: HudCo
Date Posted: 21 Jan 2014 at 1:37pm

did you get any thing oily onthe points surface what part # mag did you use