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 Post subject: 56 M38A1
PostPosted: Sun Oct 13, 2013 12:01 am 
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Joined: Sat Oct 12, 2013 11:39 pm
Posts: 1
Greetings All,

Just got my first jeep. 1956 M38A1 all stock. I really could use some help getting to know this jeep. Hoping someone who knows these can give a little advice.
Loosening the disributor lock down bolt won't allow distributor to rotate.
Fuel rich exhaust as though one cylinder isn't firing. Spark at all wires but not on electrodes of 3 plugs. Engine runs but missing on at least one.100 lb pressure on all cylinders.
Set points but cant rotate distrib to set timing. Set valves cold tomorrow.
Any suggestions are appreciated.

Paul


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 Post subject: Re: 56 M38A1
PostPosted: Sun Oct 13, 2013 5:59 am 
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Joined: Thu Aug 11, 2011 2:17 pm
Posts: 2174
Location: Akron, Ohio
lifeprofit wrote:
Greetings All,

Just got my first jeep. 1956 M38A1 all stock. I really could use some help getting to know this jeep. Hoping someone who knows these can give a little advice.
Loosening the disributor lock down bolt won't allow distributor to rotate.
Fuel rich exhaust as though one cylinder isn't firing. Spark at all wires but not on electrodes of 3 plugs. Engine runs but missing on at least one.100 lb pressure on all cylinders.
Set points but cant rotate distrib to set timing. Set valves cold tomorrow.
Any suggestions are appreciated.

Paul


It sounds like a bad spark plug.

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 Post subject: Re: 56 M38A1
PostPosted: Sun Oct 13, 2013 3:25 pm 
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Joined: Sun Mar 28, 2010 9:15 am
Posts: 5431
Location: Tallahassee, Florida
The distributor will turn but I suspect it hasn't in so long and either when installed the shaft wasn't greased or the grease has hardened that it's stuck. Penetrating lube may help.

Bad spark on that type of ignition = condenser, coil, wires, spark plugs.

Best go to http://archive.org/details/TechnicalMan ... ationM38a1 where you can download a free PDF version of the official Tech Manual.

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 Post subject: Re: 56 M38A1
PostPosted: Tue Oct 15, 2013 8:44 pm 
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LOST Junkie
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Joined: Tue Oct 19, 2010 9:14 pm
Posts: 587
Location: Trenton, MO
Welcome to LOST!!! You should post some pictures of your M38A1. One of our Jeeps is a 1957 CJ5 we got a few months ago. We tore it down and are in the process of rebuilding it.

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 Post subject: Re: 56 M38A1
PostPosted: Wed Oct 16, 2013 9:20 pm 
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Posts: 7928
Location: Big Bear & Lancaster, Ca.
Sounds like a cool Jeep, please share pics! Good place for early CJ and military Jeep info is http://www.earlycj5.net/forums/forum.php

Please return here to share what you learn if you visit the other forum!

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