Sv, raise the window and put the carb end of the vacum advance hose in your mouth. You might need to use a longer hose, suck on the hose and put your tounge over the end. Does it hold vacum? If not the vacum advance diaphragm is punctured,cracked, busted, bad. If it holds vacum you will see the breaker plate move clockwise when you remove your tongue. Make sure you are getting vacum from the carb. That truck probably uses ported vacum for the advance.(only has vacum when throttle is partly open). Many fords used manifold vacum for the advance(vacum at idle and open throttle). Either way is ok. The vacum advance will only help mileage. Will not give more power. Sounds like centrifugal advance is working. The vacum advance is easy to replace, two screws into breaker plate. Ps don't go to hot on the plugs,some times causes a no load miss.
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Today's Featured Article - New Hitches For Your Old Tractor - by Chris Pratt. For this article, we are going to make the irrational and unlikely assumption that you purchased an older tractor that is in tip top shape and needs no immediate repairs other than an oil change and a good bath. To the newcomer planning to restore the machine, this means you have everything you need for the moment (something to sit in the shop and just look at for awhile while you read the books). To the newcomer that wants to get out and use the machine for field work, you may have already hit a major roadblock. That is the dreaded "proprietary hitch". With the exception of the
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