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Darnedest problem with the GT19.9

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#1 MH81 ONLINE  


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Posted March 10, 2015 - 05:12 PM

Way back when I got this rig, I thought it could use a good carb cleaning and it's been in the back of my mind (very lonely).
Mid winter, it started to miss. Power loss too. Could NOT get the carb to adjust so the miss wasn't there... Lessened, but not gone.
It sounded like a carb issue, I could affect it with carb adjustments, but it was spark.
I would've really struggled on that -15 nite without the spark checker.
I changed plugs, same intermittent, wandering spark. Might be the front cyl, might be the back.
Played and played... Finally I figured it out.
It was the bolts that hold the points assembly to the top of the engine... Not loose, but not conducting right either.
I took one out and put it back in and the problem went away.
Re torqued them (tightened them up with a vengeance and curse words) and no further issues since.
That was over a month ago, wanted to wait until I was sure the problem was staying fixed.
Just passing it along to save the next guy some headache.
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#2 olcowhand OFFLINE  


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Posted March 10, 2015 - 05:15 PM

That's where the "toothed" washers work so well.  They bite into both the bolt & surface being bolted down for a good connection.

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#3 KennyP ONLINE  



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Posted March 10, 2015 - 05:37 PM

Glad you figured out the issue, Alan! Thanks for passing it along.

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#4 larrybl ONLINE  


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Posted March 10, 2015 - 09:00 PM

Thanks a lot! I will make sure I check this on Old Girl!

#5 Cvans OFFLINE  



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Posted March 10, 2015 - 10:48 PM

  I got a heck of a deal on my Ford 850 because of a similar issue. The guy I bought it from and the guy before him could not get it to run right. Replaced all the ignition parts and some twice. Bought it and brought it home to try my hand at it. One night after dark I was turning it over and noticed a week glow coming from under one of the screws that holds the points plate in the distributor.  Took the screw out and it had been arcing for so long that a carbon ring had formed under the screw. Cleaned it up and reassembled it. Runs like a clock. I wonder how many man hours and dollars had been put into that tractor and the frustration suffered. 

  So if you think your having ignition problems try checking things when it's dark. 

Edited by Cvans, March 10, 2015 - 10:48 PM.

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#6 rustyoldjunk OFFLINE  


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Posted March 11, 2015 - 09:33 PM

Thanks Alan. I haven't had but very little time to tinker with the non running SS18 but one thing I did find was very weak spark. I thought when I get back to it I would swap condensers but guess what I am checking first now.