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Ford 9N, 2N & 8N Discussion Board


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Posted by Farmerhr on September 24, 2012 at 18:21:31 from (

Thank you for the question. I think the leak down test was worth running. I used a Harbor Freight Leak Down Test and then did the listening test at carb intake, tail pipe,and the oil fill tube. Also check radiator for signs of leakage ie bubles.
#1 had a 15% rate, #2 had a 10% rate, #s 3&4 were very low. No bubles in the radiator. All exhaust valves showed no leakage, Intake valves showed a very small amount of leakage on cylinders 2,3&4. # 1 was tight. #1 showed a moderate amount of air in breather. 2&4 showed very little, and 3 showed a little more than 2&4.
I plan to pull the head next, measure the bores. Then I plan to remove the pistons/rod aseemblies and look the rings etc over.
Hopefully, I can then determine what I need to do. The engine is burning an excessive amount of oil. It goes through about a quart an hour.
I had done a compression check first. Numbers for dry and wet tests were #1 103 then 105, #2 112 then 115, #3 107 then 119, and #4 118 then 125.
Oil pressure is 25 cold and 20 hot.
I would appreciate any thoughts you might have.
Thank You for any thoughts you might have.


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