A torch ignitor system for a combustor of a gas turbine engine, the system comprising: a torch ignitor comprising: a combustion chamber oriented about a torch axis, the combustion chamber having axially upstream and downstream ends defining a flow direction through the combustion chamber, along the axis; a cap defining the axially upstream end of the combustion chamber and oriented about the axis, wherein the cap is configured to receive a fuel injector and at least one glow plug; an elbow connected to the downstream end of the combustion chamber for diverting combustion products along an ignition jet flame axis; a tip at a downstream end of the elbow for issuing the injection of combustion products; a main combustor for generation of combustion products for gas turbine power, wherein the main combustor is defined about an engine axis; a plurality of main fuel injectors mounted to the main combustor, wherein the torch combustion chamber is outside of the main combustor, wherein none of the main fuel injectors includes a combustion chamber outside of the main combustor, wherein the torch axis and engine axis are non-intersecting, characterized in that the tip is connected to discharge combustion products tangentially into the main combustor for ignition of a fuel/air mixture in the main combustor; and in that the ignition jet flame axis passes within spray cones of at least two of the main fuel injectors. a torch ignitor comprising: a combustion chamber oriented about a torch axis, the combustion chamber having axially upstream and downstream ends defining a flow direction through the combustion chamber, along the axis; a cap defining the axially upstream end of the combustion chamber and oriented about the axis, wherein the cap is configured to receive a fuel injector and at least one glow plug; an elbow connected to the downstream end of the combustion chamber for diverting combustion products along an ignition jet flame axis; a tip at a downstream end of the elbow for issuing the injection of combustion products; a combustion chamber oriented about a torch axis, the combustion chamber having axially upstream and downstream ends defining a flow direction through the combustion chamber, along the axis; a cap defining the axially upstream end of the combustion chamber and oriented about the axis, wherein the cap is configured to receive a fuel injector and at least one glow plug; an elbow connected to the downstream end of the combustion chamber for diverting combustion products along an ignition jet flame axis; a tip at a downstream end of the elbow for issuing the injection of combustion products; a main combustor for generation of combustion products for gas turbine power, wherein the main combustor is defined about an engine axis; a plurality of main fuel injectors mounted to the main combustor, wherein the torch combustion chamber is outside of the main combustor, wherein none of the main fuel injectors includes a combustion chamber outside of the main combustor, wherein the torch axis and engine axis are non-intersecting, characterized in that the tip is connected to discharge combustion products tangentially into the main combustor for ignition of a fuel/air mixture in the main combustor; and in that the ignition jet flame axis passes within spray cones of at least two of the main fuel injectors.