Ignition Issue

Discussion topics on Willys Overland M series vehicles
Post Reply
User avatar
Restomod
Member
Posts: 24
Joined: Thu Jun 22, 2017 6:00 pm

Ignition Issue

Post by Restomod »

My M38a1 will not start.
No spark at spark plugs.

Removed distributor cover everything looks OK.
Points open/close when motor cranks and points not corroded.
Distributor contacts look OK.
Have 24 volts at entering wire at coil connection.
Have 24 volts at center connection of coil.
Have continuity from spring to center point of distributor.
Also have continuity from leaving coil wiring connection thru points.

Is there any way to check the coil and condenser?

Any other ideas of what may be wrong?
User avatar
4x4M38
Jeep Legend
Jeep Legend
Posts: 3487
Joined: Thu May 29, 2014 6:00 pm
Location: Texas Hill Country

Post by 4x4M38 »

See Pages 82 and 83 of your TM9-8012.

If you don't have a copy they are free here to download
at the left above.

Take care,
User avatar
Restomod
Member
Posts: 24
Joined: Thu Jun 22, 2017 6:00 pm

Post by Restomod »

In the manual it gives specs for the condenser, but not the coil.

It notes to test the coil, replace it with known good one to perform test.
That's a little pricey.

Anyone know what the coil primary & secondary specs are?
User avatar
wesk
Site Administrator
Site Administrator
Posts: 16463
Joined: Sun Apr 03, 2005 6:00 pm
Location: Wisconsin
Contact:

Post by wesk »

Look in my photo album under Ignition System

http://www.willysmjeeps.com/v2/modules. ... _album.php

Then click on Distributor

http://www.willysmjeeps.com/v2/modules. ... _album.php

You'll find the how to and the spec sheet there.
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules. ... _album.php
User avatar
Restomod
Member
Posts: 24
Joined: Thu Jun 22, 2017 6:00 pm

Post by Restomod »

This info is great!

Thanks
User avatar
Restomod
Member
Posts: 24
Joined: Thu Jun 22, 2017 6:00 pm

Post by Restomod »

The coil tested out to be bad.
Couldn't figure out exactly how to test microfarid's on the condenser.
So since condenser was fairly cheap, decided to replace it.

Out of curiosity, what do you use to read microfarid's ?

Thanks again.
User avatar
wesk
Site Administrator
Site Administrator
Posts: 16463
Joined: Sun Apr 03, 2005 6:00 pm
Location: Wisconsin
Contact:

Post by wesk »

Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules. ... _album.php
Post Reply