Operating method for a lean gas engine and lean gas engine

Operating method for a lean gas engine (1) having a plurality of cylinders (2, 3, 4), wherein the lean gas engine (1) comprises a cylinder-individual gas metering, a cylinder-individual combustion process detection, wherein the lean gas engine (1) from a control unit (5) is regulated in such a way - that a burn time of the individual cylinders (2, 3, 4) from the control unit (5) is controlled individually for each cylinder by a change of an ignition timing and - that the ignition timing is individually for each cylinder controlled such by the control unit (5) that all of the cylinders (2, 3, 4) with respect to their conversion point are provided in such a matter that a defined sales point is reached at a defined crank angle, wherein - relied on the regulation of the lean gas Motos (1) Sales point than between a 5% conversion to 15% conversion point lying point, and wherein - the relied on crankshaft angle, which is in the defined turnover point as defined between -5 ° and 0 ° extending crankshaft angle.