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Ford Tractors Discussion Board

Ford 3000 Valve Adjustment Problem


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Posted by Daniel Patterson on March 11, 2009 at 05:48:36 from (76.19.123.208):

Good morning,
I just completed a ring job and valve job on my "67 Ford 3000 gas tractor. After I reassembled it, with all new gaskets of course, I checked the compression before adjusting the valve clearance just to make sure things were sealing properly. I got 140-150-155 for readings, a lot better than the 60-105-75 before. Then I preceded to adjust the valves as per the manual. When I was done adjusting the intake to .017 and the exhaust .021, I checked compression again (I checked compression because I thought it was odd that my tractor had about .060 of valve clearance and therefore I had to take up a lot) and adjusting my valves the compression dropped down 95-100 psi in all cylinders, I have two gauges and they both were giving the same reading. If I back off the adjusting nut by 1/2 turn I can get my compression right back up to the 150 range. The valves do open and close at that greater clearance. Any thoughts? I am thinking I may run it with more clearance.


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