Yesterday's Tractor Co. Parts for Farm Tractors - Compare our Prices!
Click Here or call 800-853-2651 
   Allis Chalmers Case Farmall IH Ford 9N,2N,8N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   Traditional YT Forum ViewClassic View   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Testing Briggs coil/Megafire module?


 
Post new topic    
View previous topic :: View next topic  
Author Message
Aaron SEIA
Long Time User


Joined: 16 Dec 2003
Posts: 1148
Location: SE Iowa

Report to Moderator

PostPosted: Fri Jan 11, 2013 4:54 am    Post subject: Testing Briggs coil/Megafire module? Reply to specific post Reply with quote

Have a no spark issue on my AC B110. Has new coil, plug, and Mega Fire module. Is there a way to test any of this, or do I just throw parts at it until it sparks again? Probably doesn't have 10 hours on everything.
AaronSEIA
 
Back to top
View user's profile
joe csuti
Tractor Expert


Joined: 30 Mar 2009
Posts: 1604


Report to Moderator

PostPosted: Fri Jan 11, 2013 1:55 pm    Post subject: Re: Testing Briggs coil/Megafire module? Reply to specific post Reply with quote

Disconnect kill lead to ign sw,crank eng & check for spark,if you have spark now then problem in wiring to ign sw from coil,ign sw bad or problem in safety sw's or wiring harness on tractor.

If still no spark with kill lead disconnected,check that connection from megafire module to eng block/chassis is clean/tight.After that check flywheel/coil air gap,manual says .010"-.014" or check instructions for megafire unit,air gap may have to be changed,after that goto link below & read instructions for setting flywheel timing as same is adjustable on 243000 series eng.

If after disconnecting kill lead,checking megafire ground connection & flywheel timing & you still have no spark,remove coil & take to one/more local mower shops & have them check in a coil tester,if coil tests ok,then problem may be one of the following:

1-Megafire unit bad due to heat/vibration depending on where same mounted on eng/tractor.

2-Flywheel magnets weak,this is a somewhat common problem on these old briggs eng,might try changeing flywheel/coil air gap if magnets the problem,you might be able to get around weak magnets this way.
flywheel

 
Back to top
View user's profile
El Toro
Tractor Guru


Joined: 04 Jun 2004
Posts: 21669


Report to Moderator

PostPosted: Fri Jan 11, 2013 2:01 pm    Post subject: Re: Testing Briggs coil/Megafire module? Reply to specific post Reply with quote

Touch your magnets with a flatblade screwdriver to see if they have strong magnetism as Joe suggested. Hal.
 
Back to top
View user's profile
FredinMO
Regular


Joined: 08 Oct 2009
Posts: 39


Report to Moderator

PostPosted: Fri Jan 11, 2013 9:24 pm    Post subject: Re: Testing Briggs coil/Megafire module? Reply to specific post Reply with quote

Try reversing the wires on your mega chip some old cast iron briggs have a reverse polarity coil.
 
Back to top
View user's profile
Display posts from previous:   
Post new topic    Yesterday's Tractors Forum Index -> Garden Tractors All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
TRACTOR   PARTS TRACTOR   MANUALS
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F).  Expedited shipping available, just call!  Most prices for parts and manuals are below our competitors.  Compare our super low shipping rates!  We have the parts you need to repair your tractor.  We are a Company you can trust and have generous return policies!   Shop Online Today or call our friendly sales staff toll free (800) 853-2651.

YT Home  |  Forums Home

Copyright © 1997-2014 Yesterday's Tractor Co.

Powered by phpBB © 2001, 2005 phpBB Group

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters