MF not sure what you are testing but the usual thing that fails is the module. What chip are you talking about. When I replace the module on these I fit it on the top side of the plate in the hope air being blown over it can help keep it cool. To test I just hook a module up to the killswitch wire, clip the module to somewhere on the motor and then with the plug out give it a spin to test for spark, and it usually has. I did one yesterday an old cup start, high arch with a G4 carb, full crank that had obviously been sitting for years, had no spark (points condensor not working) I clipped a module onto it, had spark, put a modified carby on it and it started first pull and revved hard while I tried to grab the snorkel to shut it down, because it had no handelbar, snorkel was laying on the ground. I didn't want it to fire up like that because it had been sitting so long, but it now seems to be running fine.
Last edited by NormK; 01/10/18 10:22 PM.
