[AJD] JD 70 running rough

[Troy Bogdan]

Ron, John and others,
I changed out the points and the condenser, and now it's back to running 
like brand new.
Thanks to all for your help,  Troy

P.S.  Yes, I do run Champion (D-21) plugs, and I usually get a few years out 
of each set.


----- Original Message ----- 
From: "Ronald L. Cook" <rlcook at pionet.net>
To: "Antique John Deere mailing list" 
<antique-johndeere at lists.antique-tractor.com>
Sent: Saturday, June 16, 2007 10:42 AM
Subject: Re: [AJD] JD 70 running rough


> John has mentioned all the things to look at.  I also think you have
> ignition related problems.  For whatever reason, when my dad's 2
> cylinder tractors did that, he always just changed the condensor.  Quick
> fix out in the field.  I am pretty sure that the condensors were not
> bad, just the act of changing it out would have a tendency to clean up
> connections and I am also sure the gap, etc. on the points was reset at
> the same time.  Using the match book cover for a feeler gauge probably
> cleaned a little corrosion off the points.
>
> Ron Cook
> Salix, IA
>
> Troy Bogdan wrote:
>> Thanks John,
>> I was thinking along those lines.  I already looked under the dist. cap, 
>> and
>> there was a little bit of carbon, but I didn't clean and re-gap yet.
>> I'll probably try that.  Otherwise, gas is fresh, and the carb was 
>> re-built
>> a few years ago.  Thanks for the help,  Troy
>>
>> ----- Original Message ----- 
>> From: "John" <jmn50 at msn.com>
>> To: "Antique John Deere mailing list"
>> <antique-johndeere at lists.antique-tractor.com>
>> Sent: Thursday, June 14, 2007 5:50 PM
>> Subject: Re: [AJD] JD 70 running rough
>>
>>
>>> Troy, I might be able to lend electrical/ignition advice but NOT
>>> carburetion
>>> on that tractor. First thing I would do is check the ignition points
>>> (under
>>> distributor cap) and clean/polish/buff and gap them if they arent in too
>>> bad
>>> shape buttttttt replace them and the condensor if they are badly burned 
>>> or
>>> pitted or all carboned up. Make sure the distributor cap is clean n 
>>> water
>>> n
>>> oil n residue n dust free with NO CRACKS and the rotor tip is okay and 
>>> the
>>> lil carbon button at top of the distributor cap. She may just need a
>>> general
>>> ignition tune up and a carb adjustment,. make sure the air cleaner bowl 
>>> is
>>> water free also and insure she has fresh clean water free gas .
>>>
>>>  John T Nordhoff in Indiana
>>>
>>> ----- Original Message ----- 
>>> From: "Troy Bogdan" <tbogdan1 at earthlink.net>
>>> To: <antique-johndeere at lists.antique-tractor.com>
>>> Sent: Thursday, June 14, 2007 4:55 PM
>>> Subject: [AJD] JD 70 running rough
>>>
>>>
>>>> I have a 1953 JD 70, and lately it has been running real rough 
>>>> (especially
>>>> under heavy load) and backfiring.  I am only a marginal mechanic.
>>>> I put in new spark plugs but it didn't seem to change anything.  What
>>>> would be the first thing I should check to try and correct the problem?
>>>> THANKS,  Troy
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