I have had 3 new plugs this week that failed work. They test fine out of the motor. 2 were in mowers that people have brought to me because they couldn't get their mower started and one I put in a Briggs while the owner was standing there. I'm thinking this must be some sort of record or is it just a sign of the way things are going. Worst part was one slasher I had fitted a PT on and put the new plug the owner had bought. Ran fine but the next day it wouldn't start. I drove to Werribee 2 hours each way to bring it home because I had no idea why it had stopped, all because of a stinking NGK spark plug. Sometimes I never learn.
