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2001: A Spark Ignition Engine Pollution Control Odyssey could be the title of an upcoming saga.
The Environmental Protection Agency has announced it plans to develop emission regulations of several types of vehicle engines exempt from current federal laws. These include non-road large spark ignition engines, many of which use propane as fuel. The proposed regulation would impact vehicles used largely indoors, including forklifts.
The agency says that most manufacturers haven't adopted technical advances for spark ignition engines that they use in cars and trucks. "LPG and natural gas engines typically use mixer technology that has changed little over the last …