H4 magneto not firing on #4 cyclinder

Posted by walter on October 04, 2002 at 17:00:53 from (209.34.8.48):

Have 1941 modetl A... farmall.. gas with mag ignition. started up fine but misses on one cyclinder. runs on 1,2,& 3.
checked distributor cap ( new) plug wire( swapped) and rotor( news) and all is OK.

1; Swapped plug wires and turned cap around 180 and same problem ( not cap or rotor or plugs).
2. put timing light on each plug and all fired BUT #4.

3. Did not check points becuase it makes no sense to fire perfectly except for #4. I saw a slight pluse glow under dark conditions on the timing light on #4.

4. Not understanding all about magnetos and having no manual on the magnetos operation I can not understand where the problem exsits.

5. I even swapped plugs around hoping to isolate it to a bad plug.

6. Do not think a COIL would act this way if defective. AM I wrong?....

all mail is appreciated.

Follow Ups:

• Re: H4 magneto not firing on #4 cyclinder Ted 17:07:12 10/07/02 (0)
• Re: H4 magneto not firing on #4 cyclinder Ted 16:58:36 10/07/02 (0)
• Re: H4 magneto not firing on #4 cyclinder Sam#3 06:45:36 10/05/02 (0)
• Re: H4 magneto not firing on #4 cyclinder SuperCmore 05:04:50 10/05/02 (1)
  • Re: Re: H4 magneto not firing on #4 cyclinder Walter 18:06:00 10/07/02 (0)
• Re: H4 magneto not firing on #4 cyclinder gene b 20:12:49 10/04/02 (0)
• Re: H4 magneto not firing on #4 cyclinder IanC 17:36:31 10/04/02 (0)

Post A Followup Name: E-Mail: Subject: Re: H4 magneto not firing on #4 cyclinder Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]