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Re: Diagnosis please - sick 656 w/c263 (spark plug pics)


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Posted by The tractor vet on February 14, 2009 at 12:29:03 from (76.212.226.84):

In Reply to: Diagnosis please - sick 656 w/c263 (spark plug pics) posted by TX656 on February 14, 2009 at 12:07:02:

I do not think that you are going to like what i have to say here . First off the hot oil pressure is on the bottom of the totem pole (not good) from the looks of th plugs yep ya got oil COMING UP not good . Doing a head job is not going to cure this . With low oil pressure the bottom end is just about toast so ya are going to probable need bearings and more then likely regrinding the crank , also new cam bearings . On the oil pumping i would have to say that either ya have scored liners and pistons on the holes in question or stuck oil rings. This is cause by running reg gas and causing the pistons to swell So i guess you are looking at a total out of chassie rebuild . If you want life out of any of the later 4 cyl. and 6 cyl. gas farmall this is what ya have to do . 1 ya run high test , 2 ya run low ash 30 weight oil 3 ya run the plug that was meant to be in it as to the heat range. , 4 ya set the ing. timing to spec. and check it with each and every point change. , 5 ya make sure that you have good fuel flow from the tank to the carb and never put a inline filter in the line the screen in the sediment bowl will get the job done and make sure that ya keep that sediment bowl clean of water and junk. Keep in mind that these tractors were build when gas was rated 95 octane for reg. and the min. fuel requirement for these engines is 93 . If you decide to rebuild then there are things that you or your machine shop need to know and i can help on this.


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