As Max said many coils and I might add spark plugs will fire out cylinder compression zone but will once the fuel load and compression are in play will not even arc the plug. Briggs uses a very large spark gap (about 0.140) to test magneto coils but the coils still need to be mount to do this. There reg coils testers but I have never needed one as I just use my head when testing a coil on engine that will not fire.
Also as Tyler mention you must have the minimum amount compression that the Powertorques requires the to start. This I don't know about these engines. Here on handheld two cycles that is 100 psi as the mix with oil requires a higher compression than the 65-70 psi that four cycle engines need. You can crank all day on a two cycle here if the compression is below 100 psi and never get a hit even with best of ignition spark. They might hit on starter fluid but I don't use it here.
