20hp vanguard help please!

beddy85

Active Member
My father-in-law has an agco Allis 1720h with a 20hp vanguard. The last few times using it just for light pulling work it will run fine then all of a sudden its like it's only running on one cylinder. This happens very sporadically no matter what throttle position it is in. Sometimes it will done it several times and the next I've not at all. I'm looking for any tips on what to check first. Thank you
 
Dump and clean out the fuel tank and lines. Verify good fuel flow AT carb inlet into glass jar.
 
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