Any engine, gas or diesel loses 3% of its power for every 1000 feet above the ocean. Some companies offered high-altitude pistons if tractors were used at heights of 4000 feet and never lower. "Altitude compensators" were also used - that later became called "turbochargers."
At the request of a customer we put high-altitude pistons in a Deere 2020 gasser once - at 1200 feet above sea level. It ran so bad we had to tear it back apart. Even with high-test gas and the timing retarded it knocked something awful.
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Today's Featured Article - Engine Basics: Spark Plug Cleaning - by Staff. Cleaning procedures: Brush or blow dirt from around the spark plug base. Remove the plug with a correctly fitted wrench. Examine the porcelain insulator and points. If the insulator appears to be melted or blistered, cracked or broken, and the points seem unduly burned it is evident that the plug is operating too hot and it should be replaced with a colder plug. If the plug is fouled excessively with carbon it apparently is operating too cold and it should be replac
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